#web-development | Python | Page 48

rustic pebble · 2020-03-19T12:09:44.407Z

```css position: center; align: center; ```

rustic pebble Mar 19, 2020, 12:09 PM

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position: center;
align: center;

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And tbh

solar hatch Mar 19, 2020, 12:10 PM

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💩

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oh that a cool website

rigid laurel Mar 19, 2020, 12:20 PM

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That kinda site really isn't a good look for here. You can just give someone the answer and explain that they might have found it faster via Google thank asking here.

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No need for passive agressive stuff like that or lmgtfy

compact lion Mar 19, 2020, 12:21 PM

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Trying to construct a form with Django for testing, but it seems some fields get removed from cleaned_data and as result the code crashes; Note that I have limited experience with the current codebase as it's made by someone else at work.

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    ...
  File "/home/mart/git/****/digisof/forms.py", line 106, in clean
    if cleaned_data[field] < min_value:
KeyError: 'number_of_lines'

📎 Screenshot_20200319_132128.png

rustic pebble Mar 19, 2020, 12:22 PM

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@rigid laurel Sometimes, google gives you a more specific answer as I have no access to their css.

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Why am I typing like I am drunk these days

solar hatch Mar 19, 2020, 12:23 PM

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@rustic pebble thanks for your help 🙂

📎 Capture.PNG

rustic pebble Mar 19, 2020, 12:23 PM

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again..

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Thanks I guess haha

solar hatch Mar 19, 2020, 12:31 PM

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😆

limber dew Mar 19, 2020, 4:37 PM

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If i have a template ready and i want to edit it, is it better to use django-cms or django?

cobalt oyster Mar 19, 2020, 4:38 PM

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Guy can someone explain what it means to have relation on model level but not database level?

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📎 Screenshot_2020-03-19-22-07-50-40.png

rustic pebble Mar 19, 2020, 5:02 PM

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It means that you can to create 2 connected classes but not 2 connected tables

cobalt oyster Mar 19, 2020, 5:05 PM

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So can I use foreign key on username and user?

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Sry is there any related material to read for this?

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Any links? i don't understand what to search for.

native tide Mar 19, 2020, 5:12 PM

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Check Corey Schafer's explanation in databases @cobalt oyster

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he got the explanation for it

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So can I use foreign key on username and user?
@cobalt oyster yes u can as every user has a username

cobalt oyster Mar 19, 2020, 5:14 PM

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@native tide won't using foreign key connect tables?

native tide Mar 19, 2020, 5:14 PM

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Yes

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It is valid you can do it but not recommended

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just have 1 table for them

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as every user gonna have 1 username

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not several one's

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It is a good practice to use it if like you have a user with several amount of posts

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so you "link" those posts to 1 user

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but 1 user gonna have 1 username so do not make 2 tables

cobalt oyster Mar 19, 2020, 5:17 PM

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Oh ok but won't that be primary key. Sorry I am asking too Many questions. Does the video you shred have answers to it?

tired root Mar 19, 2020, 5:23 PM

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Not having the relationship in the database is bullshit

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That totally eliminates all referential integrity

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@cobalt oyster

cobalt oyster Mar 19, 2020, 5:24 PM

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So the assignment I was given is faulty?

rustic pebble Mar 19, 2020, 5:25 PM

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@tired root You can't judge professor assignments 🙂

tired root Mar 19, 2020, 5:25 PM

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It's at least not very sound

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@rustic pebble I just did

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Professors live in a very weird world of outdated knowledge with some current knowledge mixed in

rustic pebble Mar 19, 2020, 5:25 PM

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That is why I told that

cobalt oyster Mar 19, 2020, 5:31 PM

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Its actually an assignment for internship post. Like first round of interview.

native tide Mar 19, 2020, 7:54 PM

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@cobalt oyster the video has answers

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the User will have a primary key

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yes

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also ive come up with this. how do i make spaces between the images and display text under them so it looks clean?

📎 unknown.png

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<!DOCTYPE html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">

    <title>Hello, world!</title>

    <style type="text/css">
        .row div{padding: 20px 10px;}
    </style>

  </head>
  <body>
    <div class="container">
        <div class="row">
            <div class="col-sm-6">
                {% for movie in movies %}
                    <img src="{{ movie.poster }}" alt="Movie Poster" height="260" width="175">
                {% endfor %}
            </div>
        </div>
    </div>

    <!-- Optional JavaScript -->
    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
    <script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
  </body>
</html>

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my code

fringe solar Mar 19, 2020, 8:55 PM

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I never used boostrap, but in this div <div class="col-sm-6"> in the css you can add a padding or a margin and it should normally work @native tide
to have the text under them, have in your {% for %} loop a <p> and pass in from python the text and then put {{ text }} in your html

pliant falcon Mar 19, 2020, 9:02 PM

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can someone tell me how the hell human build this website? whats the toolss hows the animations works.. page transition.. everything is really blowin ma mind

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http://56k.studiovoila.com/

56k

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open with chrome

vocal storm Mar 20, 2020, 12:01 AM

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Advice request! Can you help, or know someone who can? Details here: https://www.reddit.com/r/Python/comments/flkhm9/advice_request_re_pythondropboxbrowser_app_dev/?utm_source=share&utm_medium=ios_app&utm_name=iossmf

r/Python - Advice request re: Python-Dropbox-Browser app dev

0 votes and 1 comment so far on Reddit

native tide Mar 20, 2020, 12:40 AM

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@pliant falcon Wow, it's beautiful on mobile too. That isn't really Python related as everything you see there is done on the front-end with JS and CSS, but it is an amazing looking site.

potent idol Mar 20, 2020, 2:02 AM

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That website looks nice but holy shit the scrolling on desktop is terrible

cobalt oyster Mar 20, 2020, 2:04 AM

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@native tide thanks. And about your images.
You can use css 'margin-bottom ' to provide space on the bottom. But if you want your page to fit any zoom or or screen you might wanna use bootstrap grid.

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@pliant falcon react components maybe.

pliant falcon Mar 20, 2020, 6:47 AM

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That website looks nice but holy shit the scrolling on desktop is terrible
@potent idol you right but for me its only on firefox.. if I use chrome its smoothscrolling

fallow lynx Mar 20, 2020, 9:10 AM

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from django.shortcuts import render
import urllib.request
import requests
from bs4 import BeautifulSoup
from collections import Counter
from string import punctuation


def frequency(request):
    if request.method == "POST":
        url = request.POST.get['site']
        print(url)
        r = requests.get(url)
        soup = BeautifulSoup(r.content)

        # We get the words within paragraphs
        text_p = (''.join(s.findAll(text=True)) for s in soup.findAll('p'))
        c_p = Counter((x.rstrip(punctuation).lower() for y in text_p for x in y.split()))

        # We get the words within divs
        text_div = (''.join(s.findAll(text=True)) for s in soup.findAll('div'))
        c_div = Counter((x.rstrip(punctuation).lower() for y in text_div for x in y.split()))

        total = c_div + c_p
        list_most_common_words = total.most_common()
        print(list_most_common_words)
    return render(request, "wordcount/frequency.html", {})


def result(response):


    return render(response, "wordcount/result.html", {})

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i need to create a django app that will take url as input and count the number of words on that url and return the top 10 most used words

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now i can enter the url on my first html page but i can't get the result to be displayed

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can anyone help pls

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ping me

turbid glen Mar 20, 2020, 12:31 PM

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im finished learning basic html now, im planning to learn html5 but then i found out there is html6 lol. So should go straight to html6 or html5 first?

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i dont know any css or js too, im following sololearn course

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wtf lol i think i got trolled?? there is no html6 atm... pls correct me if im wrong

native tide Mar 20, 2020, 12:48 PM

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There is no HTML6 as far as I'm concerned

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Just learn HTML/CSS

turbid glen Mar 20, 2020, 12:52 PM

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lol

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wait so i shouldnt learning html5 first?

wet ibex Mar 20, 2020, 1:20 PM

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with react (frontend) + django (backend), is it common for them to be in the same project (repo)? otherwise, how would i make a pipeline between them?

native tide Mar 20, 2020, 1:22 PM

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https://hastebin.com/kuwoniwuju.py
So I can't seem to save my form data into my database
anyone know why I'm having problems with my code?

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I am following a course online made by Mosh Hamedani

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he ask to do an exercise

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where you need to make a function that takes to arguments

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two arrays as arguments

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the second argument will remove the items it includes in the first argument

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for example:js let arg1 = [2,3,4,5,1,2,2,5,5]; let arg2 = [2,5]; except(arg1,arg2); output = [3,4,1]

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so i did the exercise

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my solution is different from his.

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solution1:js function except(array, toRemove) { for (item of toRemove) { while (array.includes(item)) { array.splice(array.indexOf(item), 1); } } return array }

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solution2:js function except(array, excluded) { const output = []; for (let element of array) { if (!excluded.includes(element)) { output.push(element); } } return output }

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which one do you guys think is better? Your opinion.

wet ibex Mar 20, 2020, 1:34 PM

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one mutates the original array, one does not

native tide Mar 20, 2020, 1:49 PM

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that's right, so you would choose that one?

gaunt coral Mar 20, 2020, 2:39 PM

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It depends

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if you want to keep a copy of the original array then you shouldnt mutate it

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you could assign it for example to a new variable

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new_array = except(array, exclude)

oblique hemlock Mar 20, 2020, 3:00 PM

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How can I add " singing in with goole or other platforms " in flask?

sly canyon Mar 20, 2020, 3:31 PM

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@oblique hemlock
https://blog.miguelgrinberg.com/post/oauth-authentication-with-flask
https://blog.miguelgrinberg.com/post/two-factor-authentication-with-flask

OAuth Authentication with Flask - miguelgrinberg.com ...

miguelgrinberg.com

Two Factor Authentication with Flask - miguelgrinberg...

miguelgrinberg.com

oblique hemlock Mar 20, 2020, 3:31 PM

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Ily

sly canyon Mar 20, 2020, 3:34 PM

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I have the code from an old project here, maybe it can help you

lavish prismBOT Mar 20, 2020, 3:37 PM

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Hey @sly canyon!

It looks like you tried to attach file type(s) that we do not allow (.txt). We currently allow the following file types: .3gp, .3g2, .avi, .bmp, .gif, .h264, .jpg, .jpeg, .m4v, .mkv, .mov, .mp4, .mpeg, .mpg, .png, .tiff, .wmv, .svg, .psd, .ai, .aep, .xcf, .mp3, .wav, .ogg, .md.

Feel free to ask in #community-meta if you think this is a mistake.

oblique hemlock Mar 20, 2020, 3:39 PM

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I have the code from an old project here, maybe it can help you
@sly canyon Please give it to me :O

sly canyon Mar 20, 2020, 3:44 PM

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@oblique hemlock https://pastebin.com/2ZYULuLd

Pastebin

[Python] #... # import CRUD Operations from database_setup impo...

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U still need the HTML side of things

oblique hemlock Mar 20, 2020, 3:46 PM

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Thanks !

sly canyon Mar 20, 2020, 3:47 PM

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https://pastebin.com/1L6ueF67

Pastebin

[HTML]

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Hope it helps

native tide Mar 20, 2020, 4:05 PM

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hi, someone know about catch har file from python ?

native tide Mar 20, 2020, 4:29 PM

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What are the most important phones on this list in terms of making sure design is best?

📎 unknown.png

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I dont use smart phones so its hard for me to care about them. The only reason I do is because its expected and I dont want to seem lazy or unable to do it.

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Fuck...

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I just realized that my logins are not working in Chromium. :/

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I'm thinking about quitting webdev.

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Like, who puts up with this for fun? Why dont I just make programs for an operating system where I dont have to deal with this?

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Webdev is fun until it turns into and endless cycle of compatability for this browser, that form factor

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And its just like... why. Why make your program this way?

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The only reason that makes any sense is because you can reach a lot of people and make a lot of money potentially. But thats not my end game. So I ask again, why should I torture myself with this bs

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Its fun until you realize it only works from the scope of the thing youve been developing it for. Then as soon as you try it somewhere else and find it doesnt work all that fun just spirals down into...

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"This is the complete opposite of fun."

rustic pebble Mar 20, 2020, 5:03 PM

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@native tide are they erroring out on chromium browsers?

native tide Mar 20, 2020, 5:08 PM

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It just doesnt login. It doesnt flash the messages. It accepts the user and password but it just refreshes the browser.

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I'm kind of too upset right now to calmly solve it. I have to destress from realizing that its doing this and fix it when im less dramatic about it

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@app.route('/login', methods=['GET', 'POST'])
def login():
    if current_user.is_authenticated:
        return redirect(url_for('home'))

    form = LoginForm()
    if form.validate_on_submit():

        user = UserAccount.query.filter_by(email=form.email.data).first()
        if user and bcrypt.check_password_hash(user.password, form.password.data):
            login_user(user, remember=form.remember.data)
            next_page = request.args.get('next')
            return redirect(next_page) if next_page else redirect(url_for('home'))

        else:
            flash('Login Unsuccessful. Please check email and password.', 'danger')

    return render_template("login.html",
                           title="Login",
                           form=form)

rustic pebble Mar 20, 2020, 5:11 PM

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Hmm

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btw

native tide Mar 20, 2020, 5:11 PM

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oh shit

rustic pebble Mar 20, 2020, 5:11 PM

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you should use redirects

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instead of rerendering the whole page

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so

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you should do:

native tide Mar 20, 2020, 5:11 PM

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Theres a weird if statement there that does nothing

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maybe thats it

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I didnt finish that last night

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I hope thats it

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no nevermind

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Thats not it

rustic pebble Mar 20, 2020, 5:12 PM

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res = make_response("")
res.headers['location'] = url_for('whateverurlyouwant')
return res, 304

304 is the code for redirect

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So for instance, when a user is logged in you want to redirect them to the logged_in html

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I have never seen flash actions, I always use js to do it

native tide Mar 20, 2020, 5:15 PM

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It works fine in firefox. I dont really understand how to figure out why it doesnt work in Chromium. Its not something ive ever done before. It has to do with validating because its never getting passed if form.validate_on_submit(): and going straight to return render_template("login.html")

rustic pebble Mar 20, 2020, 5:15 PM

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can you open the browser console and see potential errors?

native tide Mar 20, 2020, 5:16 PM

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good call Unchecked runtime.lastError: The message port closed before a response was received.

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I can probably find the answer by searching this error

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its being caused by chrom extentions!

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Which...

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in my case

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I never use chromium unless I need some weird extention they dont have on firefox.

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So my chromium has a lot of othem

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Thats so weird

rustic pebble Mar 20, 2020, 5:18 PM

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Hmm

native tide Mar 20, 2020, 5:19 PM

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Well thats what this stackoverflow question is saying i havent verified it will fix it yet

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Fuck though.... Im really, seriously considering quitting webdev. I do this for fun, not to serve ads and get rich.

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Like why would I choose a platform that ultimately is just constant compatability problems across different software

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This is a real question im asking. Why would I do this? lol

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Originally my thinking was, "It will be easy to reach everyone no matter what they are using."

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But is it really though? Is it not actually just a nightmare of compatability adjusting? Do you eventually get better at making sure it works on everything before moving forward?

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Or is this what webdev consists of entirely? Because thats what its starting to seem like to me

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And I have to ask, why would I choose this for my hobby when I can make a program that works univerally on the same system I designed it for and maybe not everyone would reach it... But it would be a lot more fun for me to build.

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It seems like the only justification for webdev is serving the shit out of ads. Tell me Im wrong so I can keep working on this lol.

native tide Mar 20, 2020, 5:39 PM

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Well, I got rid of that weird error which was to do with extentions

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But it wasnt what is making my logins not works

pulsar hare Mar 20, 2020, 5:43 PM

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It is something that gets better. Honestly, login is one of the trickiest things out there to get right out of the door. I've actually found that a server-side rendered login page is almost always best, because if you have to do something later like support SSO it's a lot easier to go through the redirect flows there than it is through Javascript/React/Some API you've designed.

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Even if the rest of my app is 100% React/GraphQL/API based, the login page is almost always a traditional MVC server-side throwback to the late 1990s / early aughts.

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As for the stuff about smartphone layouts you asked about earlier, start with Bootstrap and use its layout mechanism heavily until you need to get fancy with it. That'll solve 90% of your headaches and cause only around 20% on its own.

native tide Mar 20, 2020, 5:48 PM

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Yeah, its mainly when I add elements too the bootstrap templates that it starts to be a headache. That is at least a headache I know how to solve.

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This is entirely new. That is: Works 100% in browser 1, does nothing/no feedback in browser 2

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Right now Im trying running on different ports.

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My login is 100% flask/flask_login

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I complain and say that I will quit.

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But I calm down and I will be back at this shit again and again.

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Thats who I am

rustic pebble Mar 20, 2020, 5:56 PM

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Well web development can get really annoying really fast, but web dev is way more fun compared to regular program development. I love it because it incorporates many technologies together

native tide Mar 20, 2020, 6:01 PM

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Damn...

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The thing is, this isnt JavaScript, so there arent errors in the console relevant to this.

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Its not erroring, its just not doing what its supposed to do.

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And if it is what its supposed to, that doesnt explain why it does a completely different thing in another browser.

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So... where do you even start to look.

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All I can think is to keep googling, "Flask_login works in firefox not in chromium" and try everything I find

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But so far nothing

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Im gonna try broadcasting the dev server on 0.0.0.0 so i can use chrome on another device and see what happens.

rustic pebble Mar 20, 2020, 6:07 PM

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This is weird indeed

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I never had these kind of problems

native tide Mar 20, 2020, 6:09 PM

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Im very curius to see if the same behavior happens in Windows from chrome but I dont have a windows machine unless I shut down this OS where the dev server is running from.

rustic pebble Mar 20, 2020, 6:10 PM

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Hmm

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I rent vms for these type of probs

native tide Mar 20, 2020, 6:11 PM

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It has to be this! lol. The pitfalls of being a privacy nut. I hope this is what it is

📎 unknown.png

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I should get a Windows VM set up.

rustic pebble Mar 20, 2020, 6:11 PM

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I don't think it is that

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judging from what you sent me earlier you are not using cookies at all

native tide Mar 20, 2020, 6:12 PM

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That is what it was.

rustic pebble Mar 20, 2020, 6:12 PM

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Actually?

native tide Mar 20, 2020, 6:13 PM

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Yep. It logs me in now

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I need a message that tells users they cant block cookies I guess :/

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The only reason I block cookies is third party cookies that are so common

rustic pebble Mar 20, 2020, 6:13 PM

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You are using cookies then?

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I always use cookies for that manner

native tide Mar 20, 2020, 6:13 PM

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For this domain and port.

rustic pebble Mar 20, 2020, 6:13 PM

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Oh well

native tide Mar 20, 2020, 6:13 PM

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I never use chromium at all really. I have it just because I have it.

rustic pebble Mar 20, 2020, 6:14 PM

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I thought you were using some session id weird shit

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I have seen some people do it

native tide Mar 20, 2020, 8:08 PM

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Is bootstrap only used for prototyping and stuff?

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Or is it actually used for production?

rigid laurel Mar 20, 2020, 8:15 PM

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Its used in production

rain goblet Mar 21, 2020, 12:25 AM

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@rustic pebble I'm being thrown like 20 errors from flask and don't even know where to start to look up online the cause

rustic pebble Mar 21, 2020, 12:25 AM

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Sure

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send me the stacktrace and we can start working on them

rain goblet Mar 21, 2020, 12:26 AM

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📎 Screenshot_16.png

rustic pebble Mar 21, 2020, 12:27 AM

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So basically it is not able to locate the index.html file

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Could you send me the codeblock you are currently experimenting on?

rain goblet Mar 21, 2020, 12:27 AM

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from flask import Flask
from flask import render_template

app = Flask(__name__)

@app.route('/')
def index():
    greeting = "Hello World"
    return render_template("index.html", greeting=greeting)

if __name__ == "__main__":
    app.run()

#

that file is app.py

#

<html>
    <head>
        <title>Gothons of Planet Percal #25</title>
    </head>
<body>
    
{% if greeting %}
    I just wanted to say
    <em style="color: green; font-size: 2em;">{{ greeting}}</em>.
{% else %}
    <em>Hello</em>, world!
{% endif %}
    
</body>
</html>

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that is index.html

rustic pebble Mar 21, 2020, 12:28 AM

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So for starters 2 things

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If you want syntax highlighting like this:

def example():
  print('this is an example:')

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you should do:

#

three_back_ticks``python
rest of your code

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!code

lavish prismBOT Mar 21, 2020, 12:29 AM

#

Discord has support for Markdown, which allows you to post code with full syntax highlighting. Please use these whenever you paste code, as this helps improve the legibility and makes it easier for us to help you.

To do this, use the following method:

```python
print('Hello world!')
```

Note:
• These are backticks, not quotes. Backticks can usually be found on the tilde key.
• You can also use py as the language instead of python
• The language must be on the first line next to the backticks with no space between them

This will result in the following:

print('Hello world!')

vestal hound Mar 21, 2020, 12:29 AM

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```python
code here
```

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like this

rustic pebble Mar 21, 2020, 12:30 AM

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Seocnd, when importing from the same module you should do

from modulename import 1,2,3,4,5

in your case

from flask import Flask, render_template

rain goblet Mar 21, 2020, 12:34 AM

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from flask import Flask, render_template

app = Flask(__name__)

@app.route('/')
def index():
    greeting = "Hello World"
    return render_template("index.html", greeting=greeting)

if __name__ == "__main__":
    app.run()

rustic pebble Mar 21, 2020, 12:34 AM

#

so Ok

rain goblet Mar 21, 2020, 12:34 AM

#

<!DOCTYPE HTML>
    <html>
        <head>
            <title>Gothons of Planet Percal #25</title>
        </head>
    <body>
    
    {% if greeting %}
        I just wanted to say
        <em style="color: green; font-size: 2em;">{{ greeting}}</em>.
    {% else %}
        <em>Hello</em>, world!
    {% endif %}
    
    </body>
    </html>

rustic pebble Mar 21, 2020, 12:34 AM

#

Where have you put your index.html file?

rain goblet Mar 21, 2020, 12:35 AM

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index.html is in templates folder, app.py is in gotonweb folder

📎 Screenshot_17.png

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Following my tutorial which might be outdated/bad

rustic pebble Mar 21, 2020, 12:37 AM

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Yea you should move the app.py one file app

#

you should have app.py next to the templates folder

rain goblet Mar 21, 2020, 12:40 AM

#

wow, the tutorial didn't tell me where to put app.py so I just assumed a place which was wrong

rustic pebble Mar 21, 2020, 12:41 AM

#

Did it work?

rain goblet Mar 21, 2020, 12:42 AM

#

yeah except I think my html file is broken

rustic pebble Mar 21, 2020, 12:42 AM

#

wwdym?

rain goblet Mar 21, 2020, 12:43 AM

#

oh nevermind, I just didn't understand my tutorial xD

rustic pebble Mar 21, 2020, 12:44 AM

#

If you have any questions tell me

spring rampart Mar 21, 2020, 1:40 AM

#

I have a newbie question

ebon gull Mar 21, 2020, 1:40 AM

#

Shoot

spring rampart Mar 21, 2020, 1:42 AM

#

soooo I have learned Python, HTML5, CSS and good bit of Javascript, if i wanted to build a portfolio site to showcase my work to employers, where should I start with back end? I can put in the time to make a full front-end by myself I just don't understand how hosting works, domain names and what it entails to make the website an actual website that anyone can go to

ebon gull Mar 21, 2020, 1:43 AM

#

I have no clue about domains but look into the python flask library

spring rampart Mar 21, 2020, 1:43 AM

#

I'm just an overwhelmed cookie over here doing this all on my own

ebon gull Mar 21, 2020, 1:43 AM

#

There’s a lot of tutorials like a lot

#

It will tell you how to use the flask server to serve your HTML, css and JS to the web

#

The one Tech With Tim does teaches you how to host it so everyone can see it at the end of his tutorial

spring rampart Mar 21, 2020, 1:46 AM

#

I've messed around with flask a bit, I'll look into that, I know flask uses templates to make identical pages, is Tech With Tim a youtube channel?

ebon gull Mar 21, 2020, 1:46 AM

#

Yup

rustic pebble Mar 21, 2020, 1:47 AM

#

If you need help deploying website then you should ask on #414737889352744971. If you need help creating one ask here

#

Well basically you need to have a server that serves the correct files on user request

native tide Mar 21, 2020, 1:51 AM

#

if ur web page is static i mean server sided scripts are not even needed xD

rustic pebble Mar 21, 2020, 1:51 AM

#

Yup

spring rampart Mar 21, 2020, 1:52 AM

#

I just looked up Tech with tims youtube channel and it's perfect and has a lot of content thank you I didn't know about him before

rain goblet Mar 21, 2020, 2:04 AM

#

I've run into an issue when setting up test script for my app.py, unable to import 'nose.tools pylint(import-error) do I have to install nosetools/nosetests or something?

ebon gull Mar 21, 2020, 2:04 AM

#

Wouldn’t be a bad idea to try

rain goblet Mar 21, 2020, 2:05 AM

#

oh boy that made a different problem xD

ebon gull Mar 21, 2020, 2:05 AM

#

Rough

rain goblet Mar 21, 2020, 2:06 AM

#

just a lot of unused imports does that affect anything?

ebon gull Mar 21, 2020, 2:07 AM

#

I’ve never done any testing with test modules or stuff like that but in python no it shouldn’t be a problem

native tide Mar 21, 2020, 2:08 AM

#

@rain goblet watch ur app structure or what ever sometimes it can cause trouble , keep the test at root

rain goblet Mar 21, 2020, 2:09 AM

#

I am not using linux or virtualenv and I am just following a tutorial

native geode Mar 21, 2020, 2:18 AM

#

Hello, community,beginner here. I have a question and would really like some guidance on a web application I want to make. It has to do with a user uploading an image. The image is then prompted with several recommendation of background templates or images,( 2 or 3) . My question is. how do you go about storing these background templates/images. I understand it would require building some sort of databse or filesystem.

rustic pebble Mar 21, 2020, 2:24 AM

#

There are many ways

#

The easiest one is to convert the image to base64

#

send it over through http

#

reparse it to image on the server

#

and do the calcs there

rain goblet Mar 21, 2020, 3:16 AM

#

@rustic pebble wanna help me again? xD

rustic pebble Mar 21, 2020, 11:31 AM

#

@rain goblet sure, whats ur issue

solar hatch Mar 21, 2020, 11:52 AM

#

flask not refreshing css

#

??

#

ok its fixed

rigid laurel Mar 21, 2020, 12:37 PM

#

fwiw, that probably wasn't flask, but was your browser cacheing the static files

rustic pebble Mar 21, 2020, 12:37 PM

#

There is an option in dev tools to disable caching

rigid laurel Mar 21, 2020, 12:37 PM

#

To fix it, somewhere in the Chrome/FF dev tools, there's a tick box somewhere thats something like "Don't cache static files when dev tools is open"

rustic pebble Mar 21, 2020, 12:37 PM

#

^

native tide Mar 21, 2020, 12:46 PM

#

hello y'all, could someone of you have a look at my flask problem in #help-chestnut ? I'd be so grateful for help...

foggy summit Mar 21, 2020, 2:11 PM

#

hi how to integrate botui with WebSockets?

#

I can receive data from server

#

but I have issue with sending data to server

sly canyon Mar 21, 2020, 2:12 PM

#

@rustic pebble GOOD NEWS

#

I was able to solve that problem of having to submit the form twice

#

Withou FLASK-CORS or Javascript workarounds

rustic pebble Mar 21, 2020, 2:12 PM

#

Hmm

#

How did you manage to do that?

sly canyon Mar 21, 2020, 2:14 PM

#

Well, I did so much stuff that I'm not exactly sure what was the minimum necessary to achieve that

#

But basically I got rid of SERVER_NAME on my environment variables, as well as host parameters on my routes, when I've initiated the app I also got rid of host_matching=True as well as static_host='myapp.herokuapp.com'

#

I've also eliminated url_for(... with _external=True on my contact_form.html, it's now just <form method="POST" action="" novalidate>

#

But more importantly, I was forgetting to import my environment variables inside my create_app function that heroku requiers

#

init.py ( root/app )

from flask import Flask, request, current_app
from flask_sqlalchemy import SQLAlchemy
from flask_migrate import Migrate
import datetime
from config import Config

db = SQLAlchemy()
migrate = Migrate()
# Heroku
def create_app(config_class=Config):
    app = Flask(__name__)
    app.config.from_object(config_class)

    db.init_app(app)
    migrate.init_app(app, db)

    from app.main import bp as main_bp
    app.register_blueprint(main_bp)

    if not app.debug and not app.testing:
        # ...

        if app.config['LOG_TO_STDOUT']:
            stream_handler = logging.StreamHandler()
            stream_handler.setLevel(logging.INFO)
            app.logger.addHandler(stream_handler)
        else:
            if not os.path.exists('logs'):
                os.mkdir('logs')
            file_handler = RotatingFileHandler('logs/ladingpages.log',
                                               maxBytes=10240, backupCount=10)
            file_handler.setFormatter(logging.Formatter(
                '%(asctime)s %(levelname)s: %(message)s '
                '[in %(pathname)s:%(lineno)d]'))
            file_handler.setLevel(logging.INFO)
            app.logger.addHandler(file_handler)

        app.logger.setLevel(logging.INFO)
        app.logger.info('Lading Pages startup')

    return app

from app import models

#

maxiimoveis.py (root folder)

from app import create_app, db
from app.models import *

app = create_app()

@app.shell_context_processor
def make_shell_context():
    return({
    # Database
    'db': db,
    # Classes
    'User': User
    })

#

Procfile (root folder)

web: gunicorn app:app
web: flask db upgrade; flask translate compile; gunicorn maxiimoveis:app

#

I'm running few more tests, but I know for SURE that it was a problem with the CSRF validation

#

They were not matching

#

So I have deactivated it temporarilly, but I'm activating it again to see if flask-cors is really needed or if I can solve it with WTF_CSRF_SSL_STRICT=False

#

Indeed, not even WTF_CSRF_SSL_STRICT=False was needed, I have activated CSRF again and it's working just fine

abstract ridge Mar 21, 2020, 2:35 PM

#

Hey, is there any way to check varible inside jinja template?

sly canyon Mar 21, 2020, 2:36 PM

#

@abstract ridge check for what?

abstract ridge Mar 21, 2020, 2:37 PM

#

@sly canyon varible type i mean

sly canyon Mar 21, 2020, 2:39 PM

#

@abstract ridge I don't think you can receive the variable type, but you can test if it is a dict, string

#

or int

#

I think

abstract ridge Mar 21, 2020, 2:40 PM

#

ye,this exactly what i need

sly canyon Mar 21, 2020, 2:41 PM

#

@abstract ridge https://jinja.palletsprojects.com/en/2.11.x/templates/#list-of-builtin-tests

abstract ridge Mar 21, 2020, 2:42 PM

#

@sly canyon Ty very much 💙

sly canyon Mar 21, 2020, 2:42 PM

#

NP

native tide Mar 21, 2020, 3:24 PM

#

ok hey guys. somebody help me setup something cool with python+django. i want to create a backend with a database connection of somekind and create an interactive frontend where you can drag sliders and stuff, so that it queries for new calculations from the backend dynamically, at least.

quasi ridge Mar 21, 2020, 3:24 PM

#

hm

native tide Mar 21, 2020, 3:24 PM

#

i have no idea what tech i want, i just know i know python the best.

quasi ridge Mar 21, 2020, 3:24 PM

#

heh

#

I'm picturing a simple drawing program

#

let the user draw circles, squares, triangles &c

native tide Mar 21, 2020, 3:25 PM

#

it's probably gonna involve data science and stuff but something of that kind yes

#

where changing parameters of the models will be recalculating lots of stuff in the backend and spits you out new things

quasi ridge Mar 21, 2020, 3:25 PM

#

interactively you'll update the screen to show them what their drawing will look like as they (e.g.) drag a square around, or change its size.

#

the db part will be to save the drawing for later

native tide Mar 21, 2020, 3:26 PM

#

hmm

#

so wait i need to really think about whether i even need two-way connections actually here

#

since the get is always simple

quasi ridge Mar 21, 2020, 3:27 PM

#

what I described would probably require a two-way connection between the user's browser and your web service, but not between your web service and the database

native tide Mar 21, 2020, 3:27 PM

#

and it's not like post is much harder but it needs a separate endpoint

#

yeah

#

well the DB is hidden anyway (and I guess any DB connection is 2-way?)

#

@quasi ridge what tech would you choose

quasi ridge Mar 21, 2020, 3:32 PM

#

I'd probably use dynamodb for the backend, since I'm somewhat familiar with that (not because it's the best tech; I dunno what the best tech is). Similarly I'd probably use Pyramid for the web framework

#

I built https://teensy.info with those and it works well enough

#

flask might be a better choice of framework since it's a bit simpler. I can't remember why I chose Pyramid, tbh.

rigid laurel Mar 21, 2020, 3:37 PM

#

@native tide It really sounds like Django might not be the best for what you want. Flask+ReactJS on the front end might be better

#

it sounds like the core of your app is pretty interactive

#

whereas Django is more oriented around a static frontend

feral minnow Mar 21, 2020, 3:37 PM

#

Hi guys

native tide Mar 21, 2020, 3:38 PM

#

is flask really meant for anything serious?

#

I thought it's kind of a joke meant for only prototyping

sly canyon Mar 21, 2020, 3:39 PM

#

@native tide is Netflix serious enough?

feral minnow Mar 21, 2020, 3:39 PM

#

so me and my group wanna start doing a group project (web development using flask) can you give us any project ideas for beginners

native tide Mar 21, 2020, 3:39 PM

#

@sly canyon they use it?

sly canyon Mar 21, 2020, 3:40 PM

#

@native tide Airbnb, Netflix, Reddit, Patreon, Uber, Samsung, Nginx ...

rigid laurel Mar 21, 2020, 3:41 PM

#

I don't think any of those use Flask

#

afaik

native tide Mar 21, 2020, 3:41 PM

#

like the same version you can install with pip or do they have some in-house versions of it?

rigid laurel Mar 21, 2020, 3:42 PM

#

I'm pretty sure none of them use it. But it can be used. The way they scale it is by running lots of instances of the same Flask application

#

and then load balancing between them

#

But Flask is used a lot in enterprise

#

a lot of what you're doing is data vis it seems, and thats perfect for Flask

#

Flask is also used to expose ML models via an API fairly often

limber laurel Mar 21, 2020, 4:03 PM

#

Should I be worried about initializing my app a certain way

quasi ridge Mar 21, 2020, 4:05 PM

#

yes.

limber laurel Mar 21, 2020, 4:07 PM

#

What would be the correct way?

quasi ridge Mar 21, 2020, 4:12 PM

#

beats me! I was being sarcastic. To spell it out: I have no idea what you're talking about and thus cannot possibly answer.

native tide Mar 21, 2020, 4:36 PM

#

How easy is HTML to pick up? If I wanted to be able to create basic webpages

ebon gull Mar 21, 2020, 4:39 PM

#

Pretty easily

#

Easy*

#

And css is easy too and jf you know python JavaScript is not hard at all

native tide Mar 21, 2020, 4:40 PM

#

@ebon gull not that it matters about the time limit

#

If I were to put in 1 - 2 hours of learning HTML per day

#

How proficient in 2 - 3 weeks?

#

I will learn CSS after then focus on Django, not concerned with JS. Aiming for backend

ebon gull Mar 21, 2020, 4:41 PM

#

Depends how good you use your time I sat down and learned HTML for about 4 hours and then was able to google things as I went super easily after that

native tide Mar 21, 2020, 4:41 PM

#

Thanks

quasi ridge Mar 21, 2020, 5:15 PM

#

@native tide https://philip.greenspun.com/panda/html

spring rampart Mar 21, 2020, 5:23 PM

#

soooo npm is broken on my mac and i can't seem to fix it

quasi ridge Mar 21, 2020, 5:26 PM

#

https://www.youtube.com/watch?v=p85xwZ_OLX0

YouTube

ukgebe

Have you tried turning it off and on again

Have you tried turning it off and on again - IT Crowd

▶ Play video

#

semi-serious

#

uninstall & reinstall?

spring rampart Mar 21, 2020, 5:28 PM

#

why do we have to be like this.... it's a legit question that is not easy to fix, do you think i've already tried that, yes i have

quasi ridge Mar 21, 2020, 5:28 PM

#

I have no idea what you may have tried, sorry

spring rampart Mar 21, 2020, 5:28 PM

#

if i ask dumb questions just say it's a dumb question

quasi ridge Mar 21, 2020, 5:28 PM

#

people of all levels ask questions here

#

it's not a dumb question

#

and the sad truth is that reinstalling often does fix things, which is why I suggested it

spring rampart Mar 21, 2020, 5:29 PM

#

true honestly

quasi ridge Mar 21, 2020, 5:30 PM

#

in any case I know zero about npm, so other than my basic suggestion, I don't have any ideas

ebon gull Mar 21, 2020, 6:52 PM

#

anyone know if the speed enhancments of the quart framework matters when you end up hosting it on something like linode using apache

#

speed enhancments over flask to be percise

rigid laurel Mar 21, 2020, 6:56 PM

#

What is broken about it @spring rampart ?

#

And have you tried uninstalling and reinstalling?

ebon gull Mar 21, 2020, 6:57 PM

#

someone ping me if they have some insight

spring rampart Mar 21, 2020, 8:01 PM

#

@rigid laurel it has to do with npm not being able to find a config fil

#

Lemme link a picture hold up

#

📎 Screen_Shot_2020-03-21_at_3.03.31_PM.png

#

i already tried brew uninstall npm, didn't work

#

it throws a error like this

#

Error: No such keg: /usr/local/Cellar/node

quasi ridge Mar 21, 2020, 8:15 PM

#

@spring rampart did you try brew uninstall --force?

#

also, crazy as it sounds, you might brew install node first, and then try to uninstall npm

spring rampart Mar 21, 2020, 8:16 PM

#

I'm doing that right now to see what happens

#

holy fuck this might work

spring rampart Mar 21, 2020, 8:44 PM

#

it worked 😄

#

god damnit

#

sorry i'm a hard head sometimes when stuff doesn't work

ebon gull Mar 21, 2020, 9:00 PM

#

anyone have any gripes with Quart seems like it does everything flask does with the same lines of code it just runs faster

#

please ping me

vagrant adder Mar 21, 2020, 9:08 PM

#

@ebon gull yes it is technically faster flask that supports async

ebon gull Mar 21, 2020, 9:09 PM

#

is there any reason to continue using flask or should all future projects be done with quart

vagrant adder Mar 21, 2020, 9:09 PM

#

i think i've seen somewhere in quart docs that it supports most of flask extensions

ebon gull Mar 21, 2020, 9:09 PM

#

i wonder why its not more popular then it seems great

vagrant adder Mar 21, 2020, 9:09 PM

#

@ebon gull if you really want to dab into async and try to do performance optimizations, quart is a nice framework

#

i wonder why its not more popular then it seems great
yes, it feels great

#

it's only weakness is that noone knows about it :p

ebon gull Mar 21, 2020, 9:11 PM

#

I know its crazy it seems like a no-brainer to use it over flask worst case scenario your app runs the same speed as a flask app would but it can use HTTP2

vagrant adder Mar 21, 2020, 9:13 PM

#

ye

#

again, noone knows about it

wind merlin Mar 21, 2020, 10:09 PM

#

How should i host my flask project? When i try to host it on pythonanywhere, my code cant connect to th external mysql database. The database rejects the connection.

native tide Mar 21, 2020, 10:14 PM

#

Many options depending on your requirements. See if heroku works for you.

wind merlin Mar 21, 2020, 10:22 PM

#

The problem is that my msql server rejects the connection. Is there a solution for that? Like a local database or so.

native tide Mar 21, 2020, 10:24 PM

#

where is you mysql database located?

wind merlin Mar 21, 2020, 10:25 PM

#

remotemysql.com

#

i tried other hosts but no one worked

native tide Mar 21, 2020, 10:28 PM

#

Can you show the code with which you connect and the error you are getting? Please do NOT show database password.

wind merlin Mar 21, 2020, 10:31 PM

#

mydb = mysql.connector.connect( host='remotemysql.com', user=''********', passwd='********', database=''********', connect_timeout=False )

Getting always the error code 110 i think i dont have anymore the error logs

quasi ridge Mar 21, 2020, 10:31 PM

#

your password is "hunter2"? So's mine!

#

🙄

wind merlin Mar 21, 2020, 10:32 PM

#

Hahaha you got me had to change that

#

@native tide when i am connection from my laptop using pycharm there i no connection issue, the problem only appears when i try to connect from a hosting site

quasi ridge Mar 21, 2020, 10:36 PM

#

are you sure it's the server rejecting the connection? Maybe, instead, it's the client being unable to connect to the server

#

if you have access to the server logs, you might be able to see some information about why the connection was rejected (if it indeed was)

native tide Mar 21, 2020, 10:37 PM

#

And if you don't, just briefly try heroku, it's free and takes like 5 minutes.

wind merlin Mar 21, 2020, 10:38 PM

#

yeah the server logs showed me that the connection gets rejected

#

i will have a look on heroku i used it months ago for a project but not for flask

quasi ridge Mar 21, 2020, 10:39 PM

#

odd that the logs don't tell you why

wind merlin Mar 21, 2020, 10:40 PM

#

idk because i dont have them anymore

fallow warren Mar 21, 2020, 11:34 PM

#

u can do back end web dev with python right

#

?

native tide Mar 21, 2020, 11:42 PM

#

Yes, please read up on Flask and Django and then come back for specific questions.

ebon gull Mar 21, 2020, 11:43 PM

#

Also try quart it’s flask but faster uses almost the same syntax

native tide Mar 21, 2020, 11:44 PM

#

Hi I'm working on a blog site and I'm trying to set up password reset email but I'm getting this error Ik its some gmail smtp error but I don't know how to configure I wanna configure it for every user not only for me. So here is the error :

(530, b'5.7.0 Authentication Required. Learn more at\n5.7.0  https://support.google.com/mail/?p=WantAuthError d4sm5789701lfa.75 - gsmtp', 'webmaster@localhost')
Request Method:    POST
Request URL:    http://127.0.0.1:8000/password-reset/
Django Version:    3.0.4
Exception Type:    SMTPSenderRefused
Exception Value:    
(530, b'5.7.0 Authentication Required. Learn more at\n5.7.0  https://support.google.com/mail/?p=WantAuthError d4sm5789701lfa.75 - gsmtp', 'webmaster@localhost')
Exception Location:    C:\Users\Usman Fazal\AppData\Local\Programs\Python\Python38-32\lib\smtplib.py in sendmail, line 871
Python Executable:    C:\Users\Usman Fazal\AppData\Local\Programs\Python\Python38-32\python.exe
Python Version:    3.8.1
Python Path:    
['E:\\Python\\django_project',
 'C:\\Users\\Usman '
 'Fazal\\AppData\\Local\\Programs\\Python\\Python38-32\\python38.zip',
 'C:\\Users\\Usman Fazal\\AppData\\Local\\Programs\\Python\\Python38-32\\DLLs',
 'C:\\Users\\Usman Fazal\\AppData\\Local\\Programs\\Python\\Python38-32\\lib',
 'C:\\Users\\Usman Fazal\\AppData\\Local\\Programs\\Python\\Python38-32',
 'C:\\Users\\Usman '
 'Fazal\\AppData\\Local\\Programs\\Python\\Python38-32\\lib\\site-packages']```

and here is my setting.py file source at the end I've added my Email configurations:  https://paste.pythondiscord.com/raw/masejevoyi 
I asked this question in help-3 but my question was being ignored so I'm asking here.

native root Mar 21, 2020, 11:45 PM

#

To send an email via gmail you need special authentication beyond what I assume smtp.EmailBackend gives you

#

I know that thunderbird and other mail clients had to work in special functionality to allow you to access/send mails through gmail

native tide Mar 21, 2020, 11:47 PM

#

so what you think I should try a less secure mail system?

native root Mar 21, 2020, 11:47 PM

#

If you've looked at the specific error message, you'll note there's quite a bit of detail in the help article you linked about attaching applications to your gmail account

native tide Mar 21, 2020, 11:48 PM

#

hmmm I tried gmail

native root Mar 21, 2020, 11:48 PM

#

I would suggest that, you're likely to also trigger antispam in gmail and that could do unpleasant things

#

Historically I've used mailgun, they've got a pretty simple interface for these things, but I've not actually researched it

#

And it's a paid solution

native tide Mar 21, 2020, 11:52 PM

#

I checked this https://support.google.com/mail/?p=WantAuthError d4sm5789701lfa.75 - gsmtp provided help link and I got some Google app password stuff I tried but It didn't work for my own provided mail address and if it'll work then its not going to work for random people

sly canyon Mar 22, 2020, 12:43 AM

#

you're trying to send an email as webmaster@localhost and also trying to log that account at gmail?

#

show us your send email function code

#

@native tide

#

#...
import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
import email.utils
# Support for asynchronous email sending so that the application
# can continue running concurrently with the email being sent.
from threading import Thread

# Asynchronous email sending implementation
def send_async_email(app, msg):
    with app.app_context():
        # Sending Email
        server = smtplib.SMTP_SSL(host=current_app.config.get('MAIL_SERVER'),
                                  port=current_app.config.get('MAIL_PORT')
                                 )
        server.set_debuglevel(False) # Deployment version or Testing Version?
        server.login(current_app.config.get('MAIL_USERNAME'),
                     current_app.config.get('MAIL_PASSWORD')
                    )
        server.sendmail(from_addr=current_app.config.get('MAIL_USERNAME'),
                        to_addrs=msg['To'],
                        msg=msg.as_string(),
                       )
        server.quit()

#

def send_email(to_addrs, subject='', text='', html=''):
    # Create message container - the correct MIME type is
    # multipart/alternative.
    msg = MIMEMultipart('alternative')
    # Author
    msg.set_unixfrom('My Web App Name')
    if type(to_addrs) is list:
        msg['To'] = ','.join(to_addrs)
    else:
        msg['To'] = email.utils.formataddr(('Recipient', to_addrs))
    msg['From'] = email.utils.formataddr(current_app.config.get('MAIL_DEFAULT_SENDER'))
    msg['Subject'] = subject
    # Attach parts into message container.
    # According to RFC 2046, the last part of a multipart message,
    # in this case the HTML message, is best and preferred.
    if text:
        msg.attach(MIMEText(text,
                            'plain',
                            current_app.config.get('MAIL_DEFAULT_CHARSET')
                           )
        )
    if html:
        msg.attach(MIMEText(html,
                            'html',
                            current_app.config.get('MAIL_DEFAULT_CHARSET')
                           )
        )
    Thread(target=send_async_email, args=(current_app._get_current_object(), msg)).start()

#

if that helps

#

Some of the environment variables I use:

# Flask Email SMTP server settings

MAIL_SERVER=smtp.mydomain.com
MAIL_PORT=465
MAIL_USE_SSL=True
MAIL_USE_TLS=False
MAIL_USERNAME=contact@mydomain.com
MAIL_PASSWORD=somepassword
MAIL_DEFAULT_SENDER=My Web App Name,donotreply@mydomain.com
MAIL_DEFAULT_CHARSET=latin-1 # Because we speak PT-BR here.

shy holly Mar 22, 2020, 1:09 AM

#

I'm working with PaceJs, and I want to show a loading bar when a button is clicked.
The bar shows normally when the page is loading.

problem is :
The button runs a python script , and the loading bar is being showed after the script finished .
I want to show the loading bar during the script execution which takes a while to finish.

native tide Mar 22, 2020, 1:22 AM

#

@sly canyon Dude I'm trying to make a reset password function So when the user request for reset password he'll get a password reset email

sly canyon Mar 22, 2020, 1:23 AM

#

I know that, what you have not shared is how are you trying to accomplish that

#

And what I've done is showing how I do it

weary acorn Mar 22, 2020, 2:10 AM

#

I have a checkbox named terms, and need to check if its been checked or not (using flask and python)

this si what I have so far:

terms = request.form.get("terms")
if name and addr and items and phone and terms:
 # do stuff
else:
 #do other stuff

however, when the box is checked, the else executes

#

how do I check if its "checked"

sly canyon Mar 22, 2020, 2:19 AM

#

@weary acorn but have u defined name, addr, items, phone and terms?

#

form.data.name , form.data.addr, .... ?

urban spoke Mar 22, 2020, 3:01 AM

#

not sure if this is where i need to go for this, but i have text that i need to upload to my 000webhost website using python, is there any apis or something that i could use to change the html code of the site using python?
any other host where I can easily access the text is fine, if that host doesnt work

neat fox Mar 22, 2020, 4:30 AM

#

@urban spoke you could prob use this https://docs.python.org/3/library/ftplib.html

#

but I feel like setting up a proper web server with an API would probably be better long term

#

but idk your application

urban spoke Mar 22, 2020, 4:46 AM

#

just doing some testing and messing around

wind geyser Mar 22, 2020, 11:16 AM

#

I'm working with flask-wtf and I want to display form validation errors using jinja macros.
https://flask.palletsprojects.com/en/1.1.x/patterns/wtforms/#forms-in-templates
Even copy/pasting this example returns an error: "TypeError: 'HTMLString' object is not callable"

rustic pebble Mar 22, 2020, 1:41 PM

#

Can someone help me deal the following issue. I am on Django, just started learning it. Basically the following part is creating recursion errors for some reason.
RecursionError: maximum recursion depth exceeded while calling a Python object
Could someone take a look on it and maybe give me a hint?
https://paste.pythondiscord.com/sucocacilo.py

#

It is practically empty

native root Mar 22, 2020, 1:46 PM

#

That's.. interesting

#

Are you sure that file is the source? It shouldn't be. What's a chunk of the traceback look like?

rustic pebble Mar 22, 2020, 1:48 PM

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Give me a sec

#

It might be a urls problem but I am not sure

#

📎 unknown.png

native root Mar 22, 2020, 1:50 PM

#

yeah, that's a urls problem

#

You've probably made a loop with your urls dependencies

rustic pebble Mar 22, 2020, 1:50 PM

#

Oh ok. I am kinda lost with Django. Flask, aiohttp are straightforward

native root Mar 22, 2020, 1:51 PM

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Yeah, django is a framework with it's own ideas about organization

rustic pebble Mar 22, 2020, 1:51 PM

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I want to create a route

#

And it is giving me hell

#

:/

native root Mar 22, 2020, 1:52 PM

#

I mean, on it's face it's fairly simple

rustic pebble Mar 22, 2020, 1:52 PM

#

Yea it seems ok

native root Mar 22, 2020, 1:52 PM

#

you add a url(pattern, view, name) entry, but I'm not sure what you did

rustic pebble Mar 22, 2020, 1:52 PM

#

I did that:

📎 unknown.png

native root Mar 22, 2020, 1:52 PM

#

Is this within IdeaParadise.urls.py?

rustic pebble Mar 22, 2020, 1:53 PM

#

wdym .py?

native root Mar 22, 2020, 1:53 PM

#

fing autocorrect

rustic pebble Mar 22, 2020, 1:53 PM

#

So basically this is my file structure

native root Mar 22, 2020, 1:53 PM

#

Is the file this is in named urls.py and in the IdeaParadise project?

rustic pebble Mar 22, 2020, 1:53 PM

#

📎 unknown.png

native root Mar 22, 2020, 1:53 PM

#

Ah, yeah

rustic pebble Mar 22, 2020, 1:53 PM

#

Say I want to create a route which renders a home.html file

native root Mar 22, 2020, 1:53 PM

#

So, that urls.py file is also known as IdeaParadise.urls

#

so you're including the file within itself

rustic pebble Mar 22, 2020, 1:54 PM

#

How would I got about it?

#

oh ok

#

Say I want to create a route which renders a home.html file
Could you kinda walk me through this?

#

Once I am able to do one route, I will figure out the rest, rough start

native root Mar 22, 2020, 1:57 PM

#

Sure

#

Do you have a view already?

rustic pebble Mar 22, 2020, 1:58 PM

#

I had made one and I deleted it, but it looked something along the lines of

def home(request):
    return render(request, 'IdeaParadise/home.html', {})

native root Mar 22, 2020, 1:59 PM

#

And it's inside views.py? Or is that also inside urls.py?

rustic pebble Mar 22, 2020, 1:59 PM

#

That was inside views.py should I recreate it?

native root Mar 22, 2020, 1:59 PM

#

yes

rustic pebble Mar 22, 2020, 1:59 PM

#

Okay give me a second

#

Done

native root Mar 22, 2020, 2:00 PM

#

Generally, you have a "view function" that does the actual rendering and is inside yourpackage.views, your urls file them imports that via .views, and then registers inside the urls via url("/", views.view_name, name="debug_name")

rustic pebble Mar 22, 2020, 2:01 PM

#

I am kinda confused as to what mypackage is

#

📎 unknown.png

#

There are two packages named the same

native root Mar 22, 2020, 2:01 PM

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Right,

#

wheres your manage.py?

#

because that's the "root" of your django setup

rustic pebble Mar 22, 2020, 2:02 PM

#

📎 unknown.png

#

One directory up

native root Mar 22, 2020, 2:04 PM

#

right. So your manage.py is.. well.. manage, your IdeaParadise project is IdeaParadise. The urls file inside IdeaParadise is IdeaParadise.urls

#

If you were to put a file inside that second IdeaParadise folder, it would be IdeaParadise.IdeaParadise.filename

rustic pebble Mar 22, 2020, 2:05 PM

#

Oh ok

#

So say I wanted to render a home html file

#

How would I go about it?

#

I created the view

native root Mar 22, 2020, 2:06 PM

#

Right, now you go to your urls file

rustic pebble Mar 22, 2020, 2:06 PM

#

Sure

native root Mar 22, 2020, 2:06 PM

#

and you import your view at the top, then add it to the urls list like I showed you above

rustic pebble Mar 22, 2020, 2:06 PM

#

I do this by doing: from . import views correct?

native root Mar 22, 2020, 2:06 PM

#

yep

rustic pebble Mar 22, 2020, 2:06 PM

#

Hm, okay, done

native root Mar 22, 2020, 2:07 PM

#

url("/", views.view_name, name="debug_name")
Means "at url /" use the function "views.view_name" and if someone wants to find the function it's called "debug_name"

#

And then it should work, mostly

#

provided your view is setup with templates and etc

rustic pebble Mar 22, 2020, 2:07 PM

#

oh ok

#

This should work right?

#

urlpatterns = [
    path('admin/', admin.site.urls),
    path("/", views.home, name='home')
]

native root Mar 22, 2020, 2:08 PM

#

yep

rustic pebble Mar 22, 2020, 2:08 PM

#

And how would I create a home.html file?

#

Do I just add a templates folder?

native root Mar 22, 2020, 2:08 PM

#

yep

rustic pebble Mar 22, 2020, 2:09 PM

#

This should be my current setup

📎 unknown.png

native root Mar 22, 2020, 2:09 PM

#

yep

rustic pebble Mar 22, 2020, 2:09 PM

#

Let me try and see if it works

#

Thanks for the help!

native root Mar 22, 2020, 2:09 PM

#

Your render() function I'm not sure if it will

rustic pebble Mar 22, 2020, 2:09 PM

#

Hm it launched

native root Mar 22, 2020, 2:10 PM

#

progress

rustic pebble Mar 22, 2020, 2:10 PM

#

I got a not found

#

📎 unknown.png

native root Mar 22, 2020, 2:11 PM

#

Hm

#

Oh, it should just be '', not '/'

rustic pebble Mar 22, 2020, 2:11 PM

#

Ok

#

sec

#

Btw where is my view leading to?

#

def home(request):
    return render(request, 'IdeaParadise/home.html', {})

#

📎 unknown.png

#

We are getting somewhere

native root Mar 22, 2020, 2:12 PM

#

that render call means "render request with template 'IdeaParadise/home.html' and no data passed to the template"

#

I think just home.html instead of IdeaParadise/home.html may work

rustic pebble Mar 22, 2020, 2:13 PM

#

Let me try

native root Mar 22, 2020, 2:13 PM

#

There's a whole template loading thing that goes on with many locations and targets and complexity

rustic pebble Mar 22, 2020, 2:14 PM

#

Same error

📎 unknown.png

native root Mar 22, 2020, 2:14 PM

#

There should be, down below, a list of locations it's searching

rustic pebble Mar 22, 2020, 2:15 PM

#

https://hastebin.com/wapuwebopi.rb

native root Mar 22, 2020, 2:17 PM

#

Yeah, so this part:

Django tried loading these templates, in this order:

#

is the important one

#

You'll note it only searches for files in djangos admin locations

#

In your settings.py file you should have templates configuration

#

Looks something like this:

#

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [
            '/home/html/example.com',
            '/home/html/default',
        ],
    },
    {
        'BACKEND': 'django.template.backends.jinja2.Jinja2',
        'DIRS': [
            '/home/html/jinja2',
        ],
    },
]

#

You'll either want to enable APP_DIRS, which you should only use if you're not concerned about relying on any missing-template-fallback-behavior, or you'll want to add your directory to the list

rustic pebble Mar 22, 2020, 2:27 PM

#

Hmm

#

How would I add it?

native root Mar 22, 2020, 2:29 PM

#

Here:

#

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            # ... some options here ...
        },
    },
]

#

So, right after "dirs"

rustic pebble Mar 22, 2020, 2:30 PM

#

Mine is not exactly the same

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

native root Mar 22, 2020, 2:30 PM

#

oh, so you have app_dirs on

#

hm.

rustic pebble Mar 22, 2020, 2:30 PM

#

As it seems

native root Mar 22, 2020, 2:30 PM

#

What's your installed_apps look like?

rustic pebble Mar 22, 2020, 2:30 PM

#

Where can I see that?

native root Mar 22, 2020, 2:30 PM

#

It's in the settings.py file as well, usually further down

rustic pebble Mar 22, 2020, 2:31 PM

#

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
]

native root Mar 22, 2020, 2:31 PM

#

Yeah, you need to add your app to that to

#

It's IdeaParadise like we mentioned before

rustic pebble Mar 22, 2020, 2:32 PM

#

So how would I do that?

'IdeaParadise.IdeaParadise.templates'

#

?

native root Mar 22, 2020, 2:35 PM

#

No, just IdeaParadise

rustic pebble Mar 22, 2020, 2:35 PM

#

let me try

native root Mar 22, 2020, 2:35 PM

#

That tells django that there's a django app called IdeaParadise, which it should load, models, views, urls and all

rustic pebble Mar 22, 2020, 2:35 PM

#

It worked!

native root Mar 22, 2020, 2:35 PM

#

The APP_DIRS option also uses this list to have templates available

#

fireworks2

rustic pebble Mar 22, 2020, 2:35 PM

#

Nice!

#

Thanks a lot.

native root Mar 22, 2020, 2:37 PM

#

of course

#

TBH most of django is knowing where all the little pieces need to be put for it to find them

rustic pebble Mar 22, 2020, 2:42 PM

#

Yea, I don't rly like that tbh

#

But I am not doing the project alone it is collab work

foggy summit Mar 22, 2020, 6:19 PM

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WebSocket is already in CLOSING or CLOSED state.

#

dont know why

surreal heart Mar 22, 2020, 6:24 PM

#

How might I be able to pass two variables through a redirect() in flask?

timid frost Mar 22, 2020, 6:53 PM

#

Curiosity question for folks out there...

Why do you think flask ended up being so much more popular than bottle for simple/small projects?

native tide Mar 22, 2020, 6:54 PM

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@surreal heart Variables? What are in these variables?

#

@timid frost Probably because according to the site ( https://bottlepy.org/docs/stable/ ) it's at 0.12 , and Flask is more mature.

timid frost Mar 22, 2020, 6:58 PM

#

@native tide bottle has been at that number for a long, long, while... and flask was too. IIRC, they suddenly 'jumped' the version number to tweak that perception (relative to other options, but still).

native tide Mar 22, 2020, 6:59 PM

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https://bottlepy.org/docs/stable/development.html - Them still having a G+ on their development page doesn't bode well.

#

But regardless, I don't use Bottle nor have an interest in it. Just throwing possibilities out there 😄

timid frost Mar 22, 2020, 7:00 PM

#

Do you honestly think the average person doing a small project on a RPi looks at that kind of stuff?

#

Just seems like there's this automatic reflex recommendation of flask for everything...

#

Hella good marketing, however it happened 👍

native tide Mar 22, 2020, 7:02 PM

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It's not marketing, though. Flask/Django are the goto for good reasons.

marsh fox Mar 22, 2020, 7:10 PM

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@native tide Definitely. I have been lately working with AWS Lambda (Serverless Arch) though. Seems like just simple python functions are also damn good in Serverless arch. I have heard people using Flask (and even Django) on Lambda. It kind of doesn't makes sense to me.

native tide Mar 22, 2020, 7:11 PM

#

Flask is really easy to bring up and doesn't force anything on you

#

Django is slick and has a lot from the get-go

proper hinge Mar 22, 2020, 7:20 PM

#

Last I checked bottle isn't vey actively maintained and it still seems to be the case

#

232 issues, 50 PRs. Looks like it hasn't seen particularly many commits since the end of 2016.

timid frost Mar 22, 2020, 7:22 PM

#

@proper hinge I think that may be the thing, right there. Isn't bottle almost a one-person show?

proper hinge Mar 22, 2020, 7:23 PM

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I don't know

#

I wouldn't want to base my project on an ostensibly inactive library and I'm sure many others feel the same way

native tide Mar 22, 2020, 7:25 PM

#

That's another thing, is not depending on something big like that with very few maintainers

timid frost Mar 22, 2020, 7:26 PM

#

Again I wasn't thinking so much 'project' in the sense of the "Next Big Thing", but all the myriad small one-off projects for nobody but yourself.

And even 4-5 years ago, everyone was chanting the 'flask flask flask FLASK' mantra... the bottle dev might have just finally given up since then.

proper hinge Mar 22, 2020, 7:30 PM

#

Both projects are at least a decade old. Maybe a long time ago Flask was better? I wasn't around for that so I don't know. I think once a project picks up in popularity, even by "luck", then it can become a chain reaction: more resources, more use in production thus better reputation, bigger community, etc.

timid frost Mar 22, 2020, 7:32 PM

#

👍

proper hinge Mar 22, 2020, 7:38 PM

#

There was a great blog post about various web frameworks in Python but I can't find it

#

😦

#

The author was looking for a framework to use and laid out some criteria, then compared them

#

He made a point about bottle not being maintained actively so I was reminded of that article

#

Found it https://fgimian.github.io/blog/2018/05/17/choosing-a-fast-python-api-framework/

Choosing a Fast Python API Framework

timid frost Mar 22, 2020, 7:50 PM

#

Cool. Interesting that his final choice was something that I've never heard of - but then, I don't really follow that stuff too closely, either.

proper hinge Mar 22, 2020, 7:54 PM

#

I ended up going with Falcon too after reading this

#

Was debating between Falcon and hug, and in hindsight hug would have been simpler code since the project barely had any endpoints

#

Japronto looks cool too

#

Gives you a perspective of just how many frameworks are out there

#

Mind you, this blog is 2 years old so there's probably even more now

earnest oak Mar 22, 2020, 7:56 PM

#

Excuse me, I wonder if someone can tell me if I'm on the right path with this; trying to run a python script on a website domain

#

running on EC2 instance and a route53 domain

#

My approach was to have the .py script in the home directory of the instance, then set the value of the domain's record set as the EC2's IP address. Is this the right path?

quasi ridge Mar 22, 2020, 7:59 PM

#

I can barely understand what you're saying

#

explain like I'm five: what problem are you tryign to solve?

#

don't tell me how you're solving it; just describe the problem

earnest oak Mar 22, 2020, 8:00 PM

#

I feel like that's a bad sign for my approach 😅

quasi ridge Mar 22, 2020, 8:00 PM

#

"I want to find prices for sneakers on the web" or something

earnest oak Mar 22, 2020, 8:00 PM

#

oh okay

quasi ridge Mar 22, 2020, 8:00 PM

#

"I want to annoy the British Ministry of Defence"

#

"I want to ensure my web service is healthy"

earnest oak Mar 22, 2020, 8:01 PM

#

I'm intrigued by those possibilities but namely, I want to be able to run my flask app on something other than localhost

quasi ridge Mar 22, 2020, 8:01 PM

#

you mean, have it listen on a "real" IP address?

#

that should be as easy as changing "localhost" to "0.0.0.0" somewhere

earnest oak Mar 22, 2020, 8:01 PM

#

more specifically, a website

quasi ridge Mar 22, 2020, 8:01 PM

#

now hold on

earnest oak Mar 22, 2020, 8:01 PM

#

a custom domain

quasi ridge Mar 22, 2020, 8:01 PM

#

I don't udnerstand what that means

#

where is it running right now?

earnest oak Mar 22, 2020, 8:02 PM

#

it's running on my laptop

quasi ridge Mar 22, 2020, 8:02 PM

#

ok

#

do you have access to a "real" machine? Like an ec2 instance, heroku thing, google cloud, azure, etc?

earnest oak Mar 22, 2020, 8:03 PM

#

yes I have an Ec2 instance running with the script in its home directory

quasi ridge Mar 22, 2020, 8:03 PM

#

ah ok

#

can that EC2 instance receive traffic from the Internet? Like, does it have a real IP address?

#

I think mine has an "elastic IP address", which oddly enough is free

#

rare that anything in AWS is free, but real ip addresses seem to be

earnest oak Mar 22, 2020, 8:03 PM

#

hmm I think mine is not elastic

#

but yes it has a public IP that seems to be static

quasi ridge Mar 22, 2020, 8:04 PM

#

have you configured your ec2 "security groups" so that port 443 is let in?

earnest oak Mar 22, 2020, 8:04 PM

#

I've allowed ports 5000, 443, 80

quasi ridge Mar 22, 2020, 8:04 PM

#

I think you have to do that explicityly

earnest oak Mar 22, 2020, 8:04 PM

#

and 22

quasi ridge Mar 22, 2020, 8:04 PM

#

ok so you're 90% of the way there

#

so ... what isn't working 🙂

#

(btw I do exactly this -- https://teensy.info is just a script on a single ec2 box)

earnest oak Mar 22, 2020, 8:05 PM

#

oh, okay. it feels close

#

oh, neat

#

hey, was it hard to add a captcha? or nah 🤔

quasi ridge Mar 22, 2020, 8:05 PM

#

I use pyramid, not flask, but that shouldn't matter

#

it wasn't that hard actually

#

and I don't know (&(&( about front-end stuff

earnest oak Mar 22, 2020, 8:06 PM

#

Well trying to connect the pieces together is giving me some trouble

quasi ridge Mar 22, 2020, 8:06 PM

#

well be specific

earnest oak Mar 22, 2020, 8:06 PM

#

I wonder if it's just the format of my code, and it's something silly

quasi ridge Mar 22, 2020, 8:07 PM

#

tell me what you're doing, what you're observing, and how that observation differs from what you expected

earnest oak Mar 22, 2020, 8:08 PM

#

quick question: for teensy, do you have everything in a directory in the ec2 home dir?

quasi ridge Mar 22, 2020, 8:09 PM

#

not everything no

#

I think I use nginx for the ssl stuff, and it lives ... wherever it lives

earnest oak Mar 22, 2020, 8:09 PM

#

hmm

#

tell me what you're doing, what you're observing, and how that observation differs from what you expected
I just have the init.py file sitting in the home dir
The instance seems connected to everything, it's running,

quasi ridge Mar 22, 2020, 8:11 PM

#

ok you're talking very very vaguely

#

I was hoping more for "I typed flask run and it responded with HTTPError: you're ugly or something

earnest oak Mar 22, 2020, 8:11 PM

#

lol

quasi ridge Mar 22, 2020, 8:11 PM

#

Until you get specific, I can kinda sympathize, but I can't actually help

earnest oak Mar 22, 2020, 8:12 PM

#

I think you have accidentally solved my problem with that statement

#

😮

quasi ridge Mar 22, 2020, 8:12 PM

#

yeah that happens too 🙂

#

https://en.wikipedia.org/wiki/Rubber_duck_debugging

Rubber duck debugging

In software engineering, rubber duck debugging is a method of debugging code. The name is a reference to a story in the book The Pragmatic Programmer in which a programmer would carry around a rubber duck and debug their code by forcing themselves to explain it, line-by-line, ...

earnest oak Mar 22, 2020, 8:20 PM

#

darn, nevermind.

#

so, when i type flask run, it runs on the localhost, but isn't accessible thru the domain name

#

Running on http://127.0.0.1:5000/

quasi ridge Mar 22, 2020, 8:22 PM

#

ok, so you need to tell it to listen on the real IP address

#

that might be something you can do with an argument to flask run, or it might be something you need to do in your code

#

I don't use flask so I don't know off the top of my head, but I'm 98% sure it's trivially easy

#

$ python3 -m pipenv run flask run --host 0.0.0.0 --port 443
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: off
 * Running on http://0.0.0.0:443/ (Press CTRL+C to quit)

earnest oak Mar 22, 2020, 8:28 PM

#

hm, permission denied when i added --port 443

#

but just flask run --host=0.0.0.0 runs

quasi ridge Mar 22, 2020, 8:30 PM

#

yeah that's because Linux is stupid; you need to be root to "listen" on any port whose number is < 1024

#

try another port, or try it with sudo

#

I'm guessing you're using a reverse proxy ... maybe even Squid 😁

#

in which case you won't need flask to listen on a "low" port; you can let it hang out at 5000 or whatever, and have the reverse proxy do the listening-on-the-low-port thing

#

or there might be a way to have ec2 fiddle the ports around for you

earnest oak Mar 22, 2020, 8:32 PM

#

I was hoping to have my ports fiddled by ec2

#

man, i need to learn about networking

#

Okay, will try some things and report back

#

thanks for being the 🦆

quasi ridge Mar 22, 2020, 8:35 PM

#

I need to learn about networking, too; one of these days my co-workers will realize that I don't understand it

#

fwiw, I don't do any such fiddling; I tell EC2 to let port 443 in, then I run nginx as root, listening on port 443, and forwarding the decrypted requests to port 8080

earnest oak Mar 22, 2020, 8:36 PM

#

thinkmon

quasi ridge Mar 22, 2020, 8:39 PM

#

it's true!

earnest oak Mar 22, 2020, 8:43 PM

#

looking into nginx

quasi ridge Mar 22, 2020, 8:43 PM

#

what?!

#

srsly did you not know there's a popular reverse proxy called "squid"?

#

I just assumed you'd be using it 🙂

earnest oak Mar 22, 2020, 8:44 PM

#

I do now

#

since you said "maybe even Squid :cheekysmile:

quasi ridge Mar 22, 2020, 8:44 PM

#

you only need nginx if you're doing SSL, or if you expect to get a lot of traffic

earnest oak Mar 22, 2020, 8:44 PM

#

Oh,

quasi ridge Mar 22, 2020, 8:44 PM

#

(or if you hate the idea of your miserable python code running as root)

earnest oak Mar 22, 2020, 8:44 PM

#

Looking into squid

quasi ridge Mar 22, 2020, 8:45 PM

#

I don't know how good squid is; I just know it exists. Might be unmaintained these days

#

yikes, http://www.squid-cache.org/ has a seven-year-old timestamp at the bottom. I'd stay away.

squid : Optimising Web Delivery

earnest oak Mar 22, 2020, 8:46 PM

#

Oi

quasi ridge Mar 22, 2020, 8:46 PM

#

nginx is the real deal

#

people actually use it out in The Real World, and for simple cases it's fairly easy to use

earnest oak Mar 22, 2020, 8:47 PM

#

Well this is a small little project so idk if I need a reverse proxy

quasi ridge Mar 22, 2020, 8:47 PM

#

you may well not

#

I'd forget about it until you really need it

#

no need to make your life more complicated

#

I only use it for the ssl -- I am always complaining about other sites not using ssl, so I figured I oughta have my site use it

earnest oak Mar 22, 2020, 8:54 PM

#

oh , I never installed apache webserver

#

I think that's it

#

wait, Elastic Beanstalk??

tired root Mar 22, 2020, 8:58 PM

#

This is shooting mice with artillery

#

squid is a webcache for professional setups

#

If you want to set up a flask app on a webserver, use a wsgi server and a reverse proxy, apache or nginx, to not expose it to the web

#

or use mod_wsgi on apache

#

@earnest oak

#

either is fine

earnest oak Mar 22, 2020, 9:00 PM

#

I am looking into Elastic Beanstalk now, as that seems to take care of some of the network stuff for me,

#

but yes, I should look into mod wsgi and apache next

quasi ridge Mar 22, 2020, 9:02 PM

#

I looked at EB once years ago and fled, screaming, from the room 😐

#

insanely complex, terribly documented

#

YMMV

#

I figure I should rewrite teensy.info to use "appliation gateway" and lambda; I'm not sure what "application gateway" even is but I suspect it would do what I want

earnest oak Mar 22, 2020, 9:06 PM

#

😄

#

I find that statement highly relateable

#

damn, I guess wsgi/apache, it is.

timber grail Mar 23, 2020, 2:05 AM

#

Do you need to know HTML to learn Django? How much HTML / CSS knowledge is required to be a backend developer?

quasi ridge Mar 23, 2020, 2:06 AM

#

a) probably a little; b) a little 🙂

#

I'm a backend dev and I know the basics, but that's it

#

other than helping out with some web site that nobody officially owns, I've never actually had to write html

median mural Mar 23, 2020, 2:08 AM

#

I have a basic portfolio written in Django and I only know the very basics, I used pre-built html things mostly - there is a name for them but I cant remember it rn

timber grail Mar 23, 2020, 2:10 AM

#

@quasi ridge what do you mainly do?

#

What are some things you would suggest someone wanting to get started in backend development to learn? If they wanted to start off with Django.

quasi ridge Mar 23, 2020, 2:12 AM

#

I maintain (and very rarely get to improve) an internal web service, and a bunch of associated stuff, that helps automatically fix network problems

#

there are ... I think ... six of us on my team

#

Django is probably a good start. Make sure you can deal with a reasonably-complex database schema -- a few tables with foreign keys, etc

#

if I were you I'd learn about scale -- what happens if your traffic goes up by a factor of ten? What happens if your database disks fill up?

timber grail Mar 23, 2020, 2:14 AM

#

Yeah, I’m planning on learning SQL (PostgreSQL) over the summer.

#

When it comes to learning about scale, where are some good resources to learn this?

quasi ridge Mar 23, 2020, 2:14 AM

#

PostGres is a good choice, probably the best open source DB there is

#

well I'm biased; I'd say learn a couple of AWS (or equivalent) services

timber grail Mar 23, 2020, 2:14 AM

#

That’s actually on my roadmap as well lol

#

Near EOY

quasi ridge Mar 23, 2020, 2:15 AM

#

dynamodb, sqs, and sns are reasonably straightforward, once you get over the hump of users and permissions and stuff

#

then there's RDS which is your old familiar database, except you don't have to do much to administer it

#

except pay AWS money 🙂

timber grail Mar 23, 2020, 2:16 AM

#

Noted.

#

When it comes to learning about scale, do you have some resources on hand that really helped you understand it?

quasi ridge Mar 23, 2020, 2:16 AM

#

nah

#

sorry

timber grail Mar 23, 2020, 2:16 AM

#

How would I be able to simulate learning about scale?

#

As in, I can learn the theoretical concepts, but I don’t have a project that had many users.

quasi ridge Mar 23, 2020, 2:17 AM

#

set up the most underscaled, underprovisioned system you can manage, then stress it until it breaks

#

I've never done this btw

timber grail Mar 23, 2020, 2:17 AM

#

How did you go about learning it yourself?

quasi ridge Mar 23, 2020, 2:17 AM

#

run it in a leetle teeny VM maybe

#

I learned mostly by being thrown into the deep end.

#

I had a job where we hosted everything ourselves, had individual databases, and then changed jobs to work at a well-known cloud-services-provider, where scale is everything

timber grail Mar 23, 2020, 2:18 AM

#

I see

#

Thanks

ebon gull Mar 23, 2020, 3:13 AM

#

This is not a question, nor a discussion topic rather it’s a statement. Use quart instead of flask I feel like it is a under appreciated framework. It is compatible with flask works almost exaclty the same but is faster out of the box and supports http2

#

Instead of Flask(name) You use Quart(name) add a couple async words before your functions and your off. Because of this I would say it’s objectively better then flask it can even use some of flasks extensions that is doesn’t natively include

#

Even the flask documentation will work with Quart with very little modification

spring rampart Mar 23, 2020, 8:29 AM

#

can anyone help me with a git problem

jagged lark Mar 23, 2020, 10:22 AM

#

Sure, but you'd be better off asking in #tools-and-devops lemon_pleased

spring rampart Mar 23, 2020, 10:31 AM

#

I fixed it nevermind haha thank you for the tip though

rustic pebble Mar 23, 2020, 5:20 PM

#

I use Quart as well ,it seems a good module

#

@ebon gull

ebon gull Mar 23, 2020, 5:21 PM

#

That's awesome glad its getting some recognition

rustic pebble Mar 23, 2020, 5:22 PM

#

I want to get into the aiohttp world but I am not there yet

#

Quart seems like a good choice to start transitioning from flask to aiohttp

sly canyon Mar 23, 2020, 6:02 PM

#

[FLASK]
Can anyone recommend me a way to compress images based on Viewport width/height or something like it and to handle which image gets rendered based on it?

tired root Mar 23, 2020, 7:21 PM

#

compress?
you mean resize right?

#

@sly canyon

sly canyon Mar 23, 2020, 7:39 PM

#

@tired root resize would be good, if I can dot it based on parent's element width/height, but also compressing it would be good, maybe 75% instead of lossless

tired root Mar 23, 2020, 7:40 PM

#

You need to explain what you want there exactly

#

first of all, viewport can only be queried with javascript, you could then call a route in flask to obtain the image while posting the desired size

#

then use PIL or so to resize the image

#

but usually one goes with 2-3 sizes and uses one approperiate

#

compression can be done with webp

#

that is a rather newish algo for images

#

PNG can also be compressed far more than people know

#

I use png gauntlet to compress before I upload to my web

#

https://caniuse.com/#feat=webp

sly canyon Mar 23, 2020, 7:48 PM

#

@tired root I think that I want an app to manage 3 versions of the same image for me...Let's say a Mobile version, Tablet version and Desktop version.
So, it would generate 3 images for every image and based on the viewport it would render the appropriate image...I think that would be best for performance, because if I try to resize image as the user changes the viewport, it would overload my application

tired root Mar 23, 2020, 7:49 PM

#

yeah, something like that is done statically

#

Use this for compression: https://pnggauntlet.com/

PNGGauntlet - PNG Compression Software

PNG compression app for Windows. Uses PNGOUT, OptiPNG, and DeflOpt to create the smallest PNGs, without sacrificing any image quality.

#

It's free

sly canyon Mar 23, 2020, 7:49 PM

#

I have used GruntJS for that before, but it was a long time ago and I think I want something more "flasky"

tired root Mar 23, 2020, 7:49 PM

#

resize with any other app

#

Paint.net for example

sly canyon Mar 23, 2020, 7:50 PM

#

Cool, is it any good for .jpg images?

tired root Mar 23, 2020, 7:50 PM

#

no, but jpg sucks

#

I'd really use png

sly canyon Mar 23, 2020, 7:51 PM

#

I don't really have a choice, I have a bunch of .jpg files with pics of apartments and buildings

tired root Mar 23, 2020, 7:51 PM

#

JPG is very lossy, while png is lossless at a comparable size

#

Then you can't do any further compression

#

only resizing

sly canyon Mar 23, 2020, 7:53 PM

#

How do you handle the resizing based on the user's device?

tired root Mar 23, 2020, 7:53 PM

#

don't do that. Decide on 3 sizes: Large, Medium and small

#

That is the common way to decide between devices

#

COmputers = Large, Medium = Tablets, Small = smartphones

sly canyon Mar 23, 2020, 7:53 PM

#

Yes, but I mean, how do you decide between those 3 in the back-end/jinja

tired root Mar 23, 2020, 7:54 PM

#

You don't. you use media queries in css

#


/* Must be at bottom */
@media only screen and (max-width:720px) {
  .text-right {
    text-align: left;
  }
  .sidebar-wrapper {
    display: none;
  }
  .content-after-menu {
    padding-left: 0;
  }
}```

#

Simple example

#

This changes the selectors listed on any screen smaller than 720px across

#

there you can use something like background-image to decide on which image to load

#

you can also use Javascript and load the image async

sly canyon Mar 23, 2020, 7:57 PM

#

I see, but I'm using img tag to render most of the images

tired root Mar 23, 2020, 7:57 PM

#

.my-image{
  background-image: url('picture512px')
}

@media only screen and (max-width:720px) {
.my-image{
  background-image: url('picture256px')
}
}```

#

May use javascript's window.innerWidth; then

#

if (window.innerWidth <== 720){
  document.getElementById("image") // etc

}```

#

I am bad with JS, but you get the gist

sly canyon Mar 23, 2020, 8:14 PM

#

Gotcha

#

Will see how can I implement something that works for my app as it is

#

Need to keep it consistent, my current score is like that. But in order to keep the performance score high on all pages I need to automate the image stuff

📎 unknown.png

tired root Mar 23, 2020, 8:23 PM

#

what tool is that?

sly canyon Mar 23, 2020, 8:24 PM

#

Google Page Insights

#

📎 unknown.png

#

https://developers.google.com/speed/pagespeed/insights/

earnest oak Mar 23, 2020, 9:03 PM

#

hey guys what would you use to display output of some function onto the same web page?

rigid laurel Mar 23, 2020, 9:14 PM

#

The answer probably involves Flask, but it depends on exactly what you want

earnest oak Mar 23, 2020, 9:23 PM

#

Indeed using Flask, return <template> would load a new page with the results but I'm wanting to have it appear on the same page

rigid laurel Mar 23, 2020, 9:35 PM

#

The easiest solution is JavaScript

#

and AJAX

#

What you'd want to do is set up a new Flask route that returns a JSON, then send a request to that route via JavaScript using the FetchAPI.

If you're ok with the page refreshing, you can just use a form instead, and set up a POST route in your Flask @earnest oak (just a route to receive the incoming form, doesn't have to be POST)

crisp halo Mar 23, 2020, 10:05 PM

#

This code is supposed to send a message to a netcat server. It does that fine but the problem is that it closes the connection on both ends after it is done executing. Can someone tell me how to get it to stop stopping the server on both ends?

import socket
import sys
import time

IPA = '' # Where you would enter the host ip
portA = '' # Where you would enter the host port

server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
IP_address = str(IPA) 
Port = int(portA) 
server.connect((IP_address, Port)) 

message = "hello"
server.send(message) 
sys.stdout.write("<You>") 
sys.stdout.write(message) 
time.sleep(5)

earnest oak Mar 23, 2020, 10:11 PM

#

I think I'll go the POST route route

#

for some reason, it isn't working right

rigid laurel Mar 23, 2020, 10:13 PM

#

Whats the issue?

earnest oak Mar 23, 2020, 10:15 PM

#

so I have

def calculator():
  if request.method == "POST":

rigid laurel Mar 23, 2020, 10:16 PM

#

is calculator() a route?

earnest oak Mar 23, 2020, 10:16 PM

#

and at the bottom I have

return render_template('calculator.html', entry=entry, sl=sl, tp=tp)

#

yes it's the home route

#

it's under
@app.route("/", methods=['GET','POST'])

rigid laurel Mar 23, 2020, 10:17 PM

#

sure

earnest oak Mar 23, 2020, 10:17 PM

#

so outside of the if statement,

#

I have it return render_template('index.html')

#

so what it should do is take the entry, sl, and tp and return an output underneath there when I click "calculate" button

#

I'm trying to figure out how to get it to display in the same page

#

It does run, but there's no display

rigid laurel Mar 23, 2020, 10:19 PM

#

Just so I'm clear on whats happening.

You have a form, that form gets submitted as a post request to this route. Then if the route receives a post request, you extract the formfields, process them, and return a rendered template?

earnest oak Mar 23, 2020, 10:19 PM

#

yes! that's what I'm trying to say

#

I'm almost there to getting it but certain things are throwing me off. Like in that rendered template I want returned, there's a "Calculation: <output here>" , and before the "calculate" button is pressed, I shouldn't see anything down there. But I see "Calculation: ____" before any input or button is submitted

rigid laurel Mar 23, 2020, 10:21 PM

#

That sounds like a jinja issue. Can you paste the relevant bit of the template?

#

<div>
    {% if has_calculated %}
        yay
    {% endif %}
</div>

#

You should have something roughly like that

earnest oak Mar 23, 2020, 10:24 PM

#

Ohhhh

#

Hey, thanks 🙂

earnest oak Mar 24, 2020, 1:09 AM

#

to keep the script running in an EC2 instance, what do you use? screen?

quasi ridge Mar 24, 2020, 1:37 AM

#

me, no

#

I use whatever the system's "init" thing is

#

I got a config file in /etc/init that says how to run it

earnest oak Mar 24, 2020, 1:42 AM

#

I see

kindred glacier Mar 24, 2020, 1:52 AM

#

can I ask a flask question here?

fossil thicket Mar 24, 2020, 1:54 AM

#

after setting up a server and putting nginx on it, i thought i could just dump stuff in /var/www/html and i would be able to see that in the browser, that isn't the case though, i just have

📎 unknown.png

native root Mar 24, 2020, 1:56 AM

#

That's usually the case--do see what the configuration for nginx says

#

it's usually at /etc/nginx/nginx.conf or close enough

#

it should have a "root" that tells you where it's serving files from

#

if you're on osx, that could be /usr/local/www

fossil thicket Mar 24, 2020, 1:58 AM

#

@native root on a ubuntu server, ok cool, my thinking was that I could just dump a directory and access it using this? I don't need anything fancy as it'll just be a dir of html reports

#

user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

is at the top

#

i'm not too sure what the problem is i'm trying to solve because i don't usually use servers or web stuff, i don't care about making a site, i just want to host some report files 🤔

#

ok this seems similar

        root /var/www/html;

        # Add index.php to the list if you are using PHP
        index index.html index.htm index.nginx-debian.html;

#

The file i can see when i go to the IP of the server is index.nginx-debian.html , how to make it so that it just gives me a dir structure?

native root Mar 24, 2020, 2:03 AM

#

There’s your root

fossil thicket Mar 24, 2020, 2:03 AM

#

or do i need to code that, i thought that dir structures were just a default

native root Mar 24, 2020, 2:03 AM

#

Root /bar/www/html

#

Hm

fossil thicket Mar 24, 2020, 2:03 AM

#

yeah - and this file is what I can see in the browser

native root Mar 24, 2020, 2:04 AM

#

Then that’s it

fossil thicket Mar 24, 2020, 2:04 AM

#

but i want to dump a directory with reports in it, and that has sub directories

#

but that's all I can see, i can't see the directory that I've put in this folder

native root Mar 24, 2020, 2:04 AM

#

Did you copy with ‘sudo’?

fossil thicket Mar 24, 2020, 2:05 AM

#

yeah, it's all there

#

hrm

native root Mar 24, 2020, 2:05 AM

#

Try ls -al

fossil thicket Mar 24, 2020, 2:05 AM

#

yeh i can see it - teh dir is definitely here

native root Mar 24, 2020, 2:05 AM

#

If the files you want read root root

#

Then you didn’t adjust permissions so Nginx can read them

fossil thicket Mar 24, 2020, 2:05 AM

#

they do

#

ah ok

#

drwxr-xr-x 3 root root 4096 Mar 24 02:05 .
drwxr-xr-x 3 root root 4096 Mar 24 02:05 ..
drwxr-xr-x 2 root root 4096 Mar 24 01:55 reports
-rw-r--r-- 1 root root  612 Mar 24 01:42 index.nginx-debian.html

but the other file is the same

native root Mar 24, 2020, 2:06 AM

#

Nginx by default runs as www-data/www-data

#

The command to adjust them is chown

fossil thicket Mar 24, 2020, 2:06 AM

#

ok, so it handles the case of index.nginx-debian.html on my behalf, but won't do the rest

native root Mar 24, 2020, 2:07 AM

#

‘chown www-data www-data [files]’

#

Add a -R at the beginning to recursively apply to directories

fossil thicket Mar 24, 2020, 2:08 AM

#

sorry to be daft but this syntax, chown [OPTION]... [OWNER][:[GROUP]] FILE... is in the man page

#

so my option is recursive, my owner is www-data and my group is www-data, and the file is a directory

#

chown: cannot access 'www-data': No such file or directory

#

sudo chown -R www-data www-data reports/

#

it seems as though I've followed the guide

#

ok I needed : it seems

#

drwxr-xr-x 3 root     root     4096 Mar 24 02:05 .
drwxr-xr-x 3 root     root     4096 Mar 24 02:05 ..
drwxr-xr-x 2 www-data www-data 4096 Mar 24 01:55 reports
-rw-r--r-- 1 root     root      612 Mar 24 01:42 index.nginx-debian.html

👍

#

still doesn't work tho, just get that index page and nothing else

#

ah, hey ho

native root Mar 24, 2020, 2:17 AM

#

👍 forgot the colon >.<

fossil thicket Mar 24, 2020, 2:21 AM

#

😄

#

it didn't work anyway, i think i'll leave it

#

unless there's a google tip - i'm not sure what this is called

#

that's what i get if i try to go to reports dir

📎 unknown.png

#

ive run sudo systemctl restart nginx

native root Mar 24, 2020, 2:26 AM

#

oh

#

Do you have an index.html file present in the reports dir?

fossil thicket Mar 24, 2020, 2:27 AM

#

no

native root Mar 24, 2020, 2:27 AM

#

Ok. So by default NGINX looks for an index.html file, and if it's not found will do as above

fossil thicket Mar 24, 2020, 2:28 AM

#

hrm, i thought things just showed dir structures?

native root Mar 24, 2020, 2:28 AM

#

that's called directory listings

#

it's off by default for security reasons

fossil thicket Mar 24, 2020, 2:28 AM

#

like websites and stuff,. isn't that a default? Oh ok

#

eventually i'll need to pw protect this stuff, but just trying to get an idea of it atm

native root Mar 24, 2020, 2:28 AM

#

autoindex on is the config value, and you can provide it in a block...

#

Here's an example:

#

https://nginxlibrary.com/enable-directory-listing/

fossil thicket Mar 24, 2020, 2:29 AM

#

god, not knowing the right words for anything makes googling way slower 😅

#

thanks

#

ok lol i give up tonight, i';ll look tomorrow

#

thanks bast 👍

native root Mar 24, 2020, 2:36 AM

#

good luck >.<

kindred glacier Mar 24, 2020, 2:42 AM

#

Trying to have my web app to redirected to the home page after the form is submitted but it just gives the form's query in the address bar. For example /form?Name=input&Location=input

script.py

def home():
    return render_template("index.html")


@app.route("/form", methods=["POST", "GET"])
def form():
    if request.method == "GET":
        return render_template("form.html")
    else:

        return redirect(url_for("home"))```
form.html

```<form method="POST" action="/form">
    <input type="text" name="Name">
    <input type="text" name="Location">
    <input type="submit" value="submit">
</form>```

quasi ridge Mar 24, 2020, 2:43 AM

#

I wonder if redirects don't work on POSTs

#

apparantly they do 😐

kindred glacier Mar 24, 2020, 2:47 AM

#

they do. I did change form action to "/" to see what happens and got "Method Not Allowed
The method is not allowed for the requested URL."

quasi ridge Mar 24, 2020, 2:48 AM

#

where is "request" defined?

kindred glacier Mar 24, 2020, 2:48 AM

#

I imported it

#

from flask import request

quasi ridge Mar 24, 2020, 2:48 AM

#

from where?

#

ah

#

seems to work for me 😐

#

I'm running this single file

#

from flask import Flask, request, redirect, url_for
app = Flask(__name__)

@app.route("/")
def home():
    return "Hey I'm the home page"


@app.route("/form", methods=["POST", "GET"])
def form():
    if request.method == "GET":
        return """
<form method="POST" action="/form">
    <input type="text" name="Name">
    <input type="text" name="Location">
    <input type="submit" value="submit">
</form>"""
    else:

        return redirect(url_for("home"))

kindred glacier Mar 24, 2020, 2:53 AM

#

I wonder why it won't work from an html file?

quasi ridge Mar 24, 2020, 2:54 AM

#

🤷

wind merlin Mar 24, 2020, 4:27 AM

#

How can I predefine the meta data for iOS user? I tried the given code line from the official Apple site but when I change that meta website name to something, and then want to add my website to my homescreen the name is App and not the name which I chose and even when I set the meta data for the launch screen to a picture that won’t appear when I open my website from the homescreen shortcut

earnest oak Mar 24, 2020, 5:49 AM

#

This can't be normal... ran up a $20 charge in like two days getting this web app set up on AWS

#

Why route 53 gotta keep charging me though

rotund patio Mar 24, 2020, 7:20 AM

#

If you are trying to return the page from a html, what I did was use return render_template(‘file.html’) and have file.html in a file in the same directory called templates, and it works

rustic pebble Mar 24, 2020, 11:54 AM

#

@wind merlin I usually use the apple prefix in all my rels

#

And it works

#

eg

#

<link rel='apple-touch-icon" href="myicon.png">

wind merlin Mar 24, 2020, 1:36 PM

#

@rustic pebble yes the link tags are working but these one wont work
<meta name="apple-mobile-web-app-title" content="4-Shisha KombiListe"> <meta name="apple-mobile-web-app-capable" content="yes"> <meta name="apple-mobile-web-app-status-bar-style" content="black">

#

When i try to create a homescreen shortcut to the website the given Name is App and the safari menu is still active

#

And this one wont work
<link rel="apple-touch-startup-image" href="{{ url_for('static', filename='launch.gif') }}">

#

Url_for is installed because i used it for all the icons and launch.gif is existing

gusty void Mar 24, 2020, 3:14 PM

#

Heya! I'm currently working on a Django app, and I'm having an issue with templating.
E.g. take this example code:

    {% for charge in charges %}
    <tr>
        {% for field in fields %}
            <td>{{charge.field}}</td>
        {% endfor %}
    </tr>
    {% endfor %}

I have an array of objects called "charges", and an array of fields called "fields".
Let's say that a charge is a dictionary {"a":1, "b":2, "c":3, "d":4}
Given the array of fields a, b I want to only parse charge["a"] and charge["b"]
but right now it's trying to parse charge["field"]
I'm guessing that I need to do some kind of double-templating or template-escaping, but I'm not sure how to proceed. Any ideas?

#

(edited because I was showing a wrong example)

#

For now, I've just created a Charge class which will return an array of it's own values, given a list of fields, and handle this logic in a proper python function instead of in the template. Still curious if it could be done with templates

native root Mar 24, 2020, 4:06 PM

#

You’re reaccessing charge.field in the inner loop

#

You should just access field, presumably

gusty void Mar 24, 2020, 4:08 PM

#

Ah, but field is just a or b, what I want is charge['a']

#

What I have now, instead, is:

    {% for charge in charges %}
    <tr>
        {% for bar in charge.foo %}
            <td>{{ bar }}</td>
        {% endfor %}
    </tr>
    {% endfor %}

which is to say, that I solved it by using a class with a function 'foo', which returns an array of the values I wanted.

honest kindle Mar 24, 2020, 4:23 PM

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Newbie question here (google answers are vague and are from 7 years ago) can python replace javascript for front-end application?

jagged lark Mar 24, 2020, 4:26 PM

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Short answer : nope

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Long answer : it can, but the tech isn't enough mature for now to be used in production

honest kindle Mar 24, 2020, 4:26 PM

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that's unfortunate

jagged lark Mar 24, 2020, 4:26 PM

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Yep

honest kindle Mar 24, 2020, 4:27 PM

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okay, thanks for the answer.

severe folio Mar 24, 2020, 4:38 PM

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we are well on our way to having things replacing javascript in frontend though and actually some things are already making it possible so the future is bright for that question although javascript will probably never be fully replaced ever in the web

marsh canyon Mar 24, 2020, 4:54 PM

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Why do you want to replace javascript?

rustic pebble Mar 24, 2020, 4:56 PM

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we are well on our way to having things replacing javascript in frontend though and actually some things are already making it possible so the future is bright for that question although javascript will probably never be fully replaced ever in the web
@severe folio check wasm: Webassembly, it is based on js, but it is completely different. There are some wrappers that are being developed like Blazor

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https://webassembly.org/

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https://dotnet.microsoft.com/apps/aspnet/web-apps/blazor

Microsoft

Blazor | Build client web apps with C# | .NET

Blazor is a feature of ASP.NET for building interactive web UIs using C# instead of JavaScript. It's real .NET running in the browser on WebAssembly.

severe folio Mar 24, 2020, 4:57 PM

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thats what i mean ive used blazor quite a bit but for python we are not quite there

rustic pebble Mar 24, 2020, 4:57 PM

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I dont think python will ever get there

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only if someone builds a wrapper for wasm

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But I believe the complexities are many

severe folio Mar 24, 2020, 4:58 PM

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i think it can get there and someone will eventually make something now how much it will be used i can not comment on

rustic pebble Mar 24, 2020, 4:58 PM

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That gave me an idea

rigid laurel Mar 24, 2020, 5:00 PM

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We're pretty damn far from replacing JS on the frontend

severe folio Mar 24, 2020, 5:01 PM

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yeah but things are happening and over time it could be a reality that alot of sites never wrote a line of js BUT again i think 100% javascript is always gonna be used by more people then anything else on the web

rigid laurel Mar 24, 2020, 5:02 PM

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Modern JS isn't even particularly bad - the pain comes in no small part because you need to support old browsers; and we're probably a long way away from being able to use WASM to replace that

rustic pebble Mar 24, 2020, 5:02 PM

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i agree

earnest oak Mar 24, 2020, 6:00 PM

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Hi, can someone offer advice on lowering DNS query serving costs? I'm just running a simple web calculator on an EC2 instance and the Route 53 DNS querying is costing me like $6 /day

pallid loom Mar 24, 2020, 6:33 PM

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can someone help me about django ? tks

rigid laurel Mar 24, 2020, 6:33 PM

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!aks

lavish prismBOT Mar 24, 2020, 6:33 PM

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*args and **kwargs

These special parameters allow functions to take arbitrary amounts of positional and keyword arguments. The names args and kwargs are purely convention, and could be named any other valid variable name. The special functionality comes from the single and double asterisks (*). If both are used in a function signature, *args must appear before **kwargs.

Single asterisk
*args will ingest an arbitrary amount of positional arguments, and store it in a tuple. If there are parameters after *args in the parameter list with no default value, they will become required keyword arguments by default.

Double asterisk
**kwargs will ingest an arbitrary amount of keyword arguments, and store it in a dictionary. There can be no additional parameters after **kwargs in the parameter list.

Use cases
• Decorators (see !tags decorators)
• Inheritance (overriding methods)
• Future proofing (in the case of the first two bullet points, if the parameters change, your code won't break)
• Flexibility (writing functions that behave like dict() or print())

See !tags positional-keyword for information about positional and keyword arguments

rigid laurel Mar 24, 2020, 6:33 PM

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!ask whoops

lavish prismBOT Mar 24, 2020, 6:33 PM

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Asking good questions will yield a much higher chance of a quick response:

• Don't ask to ask your question, just go ahead and tell us your problem.
• Don't ask if anyone is knowledgeable in some area, filtering serves no purpose.
• Try to solve the problem on your own first, we're not going to write code for you.
• Show us the code you've tried and any errors or unexpected results it's giving.
• Be patient while we're helping you.

You can find a much more detailed explanation on our website.

twilit drum Mar 24, 2020, 6:36 PM

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Hi! I'm working on a Flask project and trying to add "projects" section where I want to put PDFs of my papers, code snippets, guide through math/coding problem. What's the best practice way to organize my project? So far I have created a blueprint "projects". Should I store files on Google Drive/Github and somehow embed them, should I create a .db, etc? Thanks

pallid loom Mar 24, 2020, 6:45 PM

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Is Django for the frontend or backend? i don't understand

rigid laurel Mar 24, 2020, 6:53 PM

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Django is a full stack framework, which means it handles both backend and front end (in the form of templates). Its not a front end framework in the same way React/Vue is though - it only renders static HTML, so I see it more as a backend framework

pallid loom Mar 24, 2020, 7:02 PM

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it's clear now haha, ty

twilit drum Mar 24, 2020, 7:18 PM

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No Flask people in here?

earnest oak Mar 24, 2020, 7:20 PM

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Yeah I would probably go the embedded github url route

vagrant adder Mar 24, 2020, 7:20 PM

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if pdfs are long and you are gonna insert them all the time, it might be easier to use gdrive

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but it's more work for connecting your api with gdrive

earnest oak Mar 24, 2020, 7:21 PM

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hey saki