🔒 Flask Bcrypt error

[orchid ice]

I have installed flask bcrypt library but when i am calling it it is showing that i haven't installed it, i installed it numerous times and the error is still there, what should i do?

[edgy goblet]

@orchid ice

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[sinful juniper]

lets rule out drunk vscode

hit ctrl + shift + p and then type reload and hit enter on reload developer window or whatever its called

[orchid ice]

Man you are a wizard!🔥

Thanks!

I was considering pycharm but i will surely use it from now

[orchid ice]

Which one do u use btw?

[sinful juniper]

vscode

lol

vscode is lightweight and works perfectly for my usecase

and the extensions are cherry on top

[orchid ice]

bro the error is still there

it took this much time to load lol

[sinful juniper]

it is?

can u open up terminal

[orchid ice]

yup

[sinful juniper]

and try running the code

[orchid ice]

yeah tell

[sinful juniper]

show the error

[sinful juniper]

does the program run tho

[orchid ice]

yes it does but not doing the encryption this

[sinful juniper]

show error

in terminal/cmd prompt

[orchid ice]

yup it does

there is no error in terminal

[sinful juniper]

u r not being very clear.

[orchid ice]

I ran the app on terminal

and the webapp is running perfectly

but the encryption which is the function of that library is not happening

[orchid ice]

So where might be the problem?

[half mortar]

what is the error?

[half mortar]

you have no error

what is the problem since you do not have an error?

[orchid ice]

i installed the bcrypt lib

for flask

and when i am calling it in my vs code

[half mortar]

yes i saw that, and you thought you had an error when you did not

[orchid ice]

it is showing i haven't installed it

[half mortar]

what is showing you have not installed it?

[orchid ice]

Exception has occurred: ModuleNotFoundError
No module named 'flask_bcrypt'
File "C:\Projects\flasktut\market.py", line 6, in <module>
from flask_bcrypt import Bcrypt
ModuleNotFoundError: No module named 'flask_bcrypt'

[half mortar]

how do you get this error?

[half mortar]

and how did you run this?

[orchid ice]

from flask_bcrypt import Bcrypt

while calling the lib

[half mortar]

im asking about how you run the code, you only get errors in python when you run the code

so in one place you say you get an error and in another place you say it work. so you must be running it in two different ways

[orchid ice]

i am building an web app

and backend using flask

and in that i want to use bcrypt lib for password hashing

[half mortar]

i get that, i use it myself.

[orchid ice]

And it isn't working the way it should

[half mortar]

and im asking how you run your code

[orchid ice]

can you be please more clear

[half mortar]

hmm... what is unclear in my question?

you run your code, you get an error

and you run your code and you do not get an error

have i understood your issue correctly?

[orchid ice]

this is my code- '''from flask import Flask, render_template, redirect, url_for, flash
from flask_sqlalchemy import SQLAlchemy
from flask_wtf import FlaskForm
import sqlalchemy
from wtforms import PasswordField, StringField, SubmitField, ValidationError
from flask_bcrypt import Bcrypt
app = Flask(name)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///market.db'
app.config['SECRET_KEY'] = 'db2dda154f9dc44d77fbcb52'
db = SQLAlchemy(app)
bcrypt = Bcrypt(app)

class User(db.Model):
id = db.Column(db.Integer(), primary_key=True)
username = db.Column(db.String(length=30), nullable=False, unique=True)
email_address = db.Column(db.String(length=50), nullable=False, unique=True)
password_hash = db.Column(db.String(length=60), nullable=False)
budget = db.Column(db.Integer(), nullable=False, default=1000)
items = db.relationship('Item', backref='owned_user', lazy=True)

@property
def password(self):
    return self.password

@password.setter
def password(self, plain_text_password):
    self.password_hash = bcrypt.generate_password_hash(plain_text_password).decode('utf-8')

class Item(db.Model):
id = db.Column(db.Integer(), primary_key=True)
name = db.Column(db.String(length=30), nullable=False, unique=True)
price = db.Column(db.Integer(), nullable=False)
barcode = db.Column(db.String(length=12), nullable=False, unique=True)
description = db.Column(db.String(length=1024), nullable=False, unique=True)
owner = db.Column(db.Integer(), db.ForeignKey('user.id'))
def repr(self):
return f'Item {self.name}' '''

class RegisterForm(FlaskForm):
def validate_username(self, username_to_check):
user = User.query.filter_by(username=username_to_check.data).first()
if user:
raise ValidationError('Username already exists! Please try a different username.')

def validate_email_address(self, email_address_to_check):
    email_address = User.query.filter_by(email_address=email_address_to_check.data).first()
    if email_address:
        raise ValidationError('Email address already exists! Please try a different email address.')
        
username = StringField(label='User Name:')
email_address = StringField(label='Email Address:')
password1 = PasswordField(label='Password')
password2 = PasswordField(label='Confirm Password')
submit = SubmitField(label='Create Account')

@app.route('/')
@app.route('/home')
def home_page():
return render_template('home.html')

@app.route('/market')
def market_page():
items = Item.query.all()
return render_template('market.html', items=items)

@app.route('/register', methods=['GET', 'POST'])
def register_page():
form = RegisterForm()
if form.validate_on_submit():
user_to_create = User(username=form.username.data,
email_address=form.email_address.data,
password_hash=form.password1.data)
try:
db.session.add(user_to_create)
db.session.commit()
return redirect(url_for('market_page'))
except sqlalchemy.exc.IntegrityError:
flash('Email address already exists. Please choose a different email address.')
db.session.rollback()
if form.errors != {}:
for err_msg in form.errors.values():
flash(f'There was an error with creating a user: {err_msg}', category='danger')

return render_template('register.html', form=form)

[edgy goblet]

Hey @orchid ice!

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[orchid ice]

yeag

[half mortar]

alright..

so the question is.. how do you run your code

you said you used the terminal

[orchid ice]

flask --app market run

[half mortar]

so how did you run it from the termianl

[orchid ice]

in the terminal

[half mortar]

and did this work or not?

[orchid ice]

yes it did

[half mortar]

and by terminal you mean windows terminal using powershell ?

[orchid ice]

but the bcrypt is not working

[half mortar]

your answers are very unclear. i just want to understand what you are saying to me

you keep not answering the questions im asking and that makes it hard for me to find out your issue

[orchid ice]

i am really sorry if i m unclear

i a bit beginner and it's my first solo project

I want to use password hashing

[half mortar]

yes. i understand that part

[orchid ice]

for that i installed the flask bcrypt lib

[half mortar]

what does this mean?

[orchid ice]

but when i am calling it in my market.py file

this means the the website is running but the hashing is not happening when i am creating an account

[half mortar]

but it runs without error even if you use bcrypt?

[orchid ice]

i didn't used debug that time

but now the page is not opening

[half mortar]

so lets get something sorted out

something not working as expected is not the same as an error

bcrypt not hashing how you want it to is different from error

an error means you get an error in your terminal and python will crash

[orchid ice]

okay, noted!

[half mortar]

so lets start with the error part

[half mortar]

whow do you get this error, how do you run the code

options to run code are, from the windows terminal, or from inside your editor

inside your editor you have a run button and youu also have its own terminal

[orchid ice]

windows terminal

[half mortar]

this terminal inside your editor is different from the windows terminal

[half mortar]

alright..

[orchid ice]

i am using vs code

[half mortar]

do you ever run code with vscode?

[orchid ice]

yes i did

[half mortar]

do you get errors when you run code inside vscode?

[orchid ice]

what will you call this

[orchid ice]

yes i got errors before

and u are rght it does not seems an error

[half mortar]

this is called a warning

[orchid ice]

it's an warning

[half mortar]

it is your editor that tells you, hey im not sure i can find info about this thing

it is vscodes intellisense that is messed up and cant figure it out.

[orchid ice]

should i try reinstalling

[half mortar]

that has nothing to do with the code itself, it is a vscode thing

the fix for that is related to vscode, not python

do you get a pylance warning?

[orchid ice]

which editor do u use?

yes exactly that

[half mortar]

can you copy the exact text from the pylance warning?

[half mortar]

i dont run python code in my editor, i run it via my terminal

[orchid ice]

Import "flask_bcrypt" could not be resolvedPylancereportMissingImports

[half mortar]

try doing pip show flask_bcrypt and share the output

[orchid ice]

Name: Flask-Bcrypt
Version: 1.0.1
Summary: Brcrypt hashing for Flask.
Home-page: https://github.com/maxcountryman/flask-bcrypt
Author: Max Countryman
Author-email: [email protected]
License: BSD
Location: c:\tools\miniconda3\lib\site-packages
Requires: bcrypt, Flask
Required-by:

[half mortar]

did you run this inside vscode or your windows terminal?

[orchid ice]

windows terminal

[half mortar]

run these for me and share the output

pip -V

python -m pip -V

py -0

[orchid ice]

did

[half mortar]

and the output?

[orchid ice]

-V:3.12 * Python 3.12 (64-bit)
-V:ContinuumAnalytics/Anaconda39-64 Anaconda py39_4.12.0

for py -0

(base) PS C:\Projects\flasktut> pip -V
pip 21.2.4 from C:\tools\miniconda3\lib\site-packages\pip (python 3.9)
(base) PS C:\Projects\flasktut> python -m pip -V
pip 21.2.4 from C:\tools\miniconda3\lib\site-packages\pip (python 3.9)
(base) PS C:\Projects\flasktut> py -0
-V:3.12 * Python 3.12 (64-bit)
-V:ContinuumAnalytics/Anaconda39-64 Anaconda py39_4.12.0

[half mortar]

you have mutlple versions of python installed

you have python 3.12 and anaconda with 3.9 installed

[orchid ice]

so should i delete one of them?

[half mortar]

so when you got the import error, it was because you used the other python version

[half mortar]

not if you dont want to, you just have to make sure you run the correct version of python

you should make a virtual environment for every python project

[orchid ice]

yes you are right!

[half mortar]

if you dont use anaconda, you can uninstall it so that you only python.org vesions of python installed. but that is up to you

[orchid ice]

I used the anaconda 3.9 and the warning disappeared

[half mortar]

that is because vscode now finds bcrypt installed in that version of python

[orchid ice]

through venv?

[half mortar]

yes, venv comes with python

[orchid ice]

so how can i install it in version 3.12

[half mortar]

py -m venv .venv from your project folder will make a new virtual environemnt using python 3.12

the reason for that is because py has a default python version it uses, the one with a * beside its name

[orchid ice]

yeah!

[half mortar]

if you install python 3.11, as an example, you can run 3.11 using py -3.11

[orchid ice]

so should i unstall 3.9 right?

[half mortar]

if you dont use anaconda there is no reason to have it, it is a great distrobution, but as you have seen, it kinda messes with you since it is bound to the python and pip name

on windows you should just use py

python can only work with one version of python at the time, while py works with all of them

[orchid ice]

so i can carry on with py as well for preventing these error?

[half mortar]

when you create a new venv, you need to install all packages you need again, since the venv will be empty

[half mortar]

yes, that will solve the error you got from bcrypt

[orchid ice]

and it will be stored in my pc only right?

[half mortar]

yes, it will be saved inside the .venv folder

together with your project files

[orchid ice]

the bcrypt is still not working though!🥲

[half mortar]

you have to activate the virtual environment and install packages first

the .venv\Scripts\activate is how you do it under windows terminal and powershell

alternatives are activate.bat and activate.ps1 for cmd and windows powershell respectivly

[orchid ice]

i m not using the virtual env right now

i switched my interprator to python 3.9

and the waarning disappeared

[half mortar]

yes, because you have installed the packages inside anaconda

you always have to install packages into a new python environment

thats why its best to just make a venv and install packages there right away

[orchid ice]

true

[half mortar]

i have even disabled the option to install packages outside a venv

[orchid ice]

will definetely do that in future ones

so how should i run it now?

[half mortar]

you can even see that i have activated a venv here

[half mortar]

as long as you have an active venv and installed your packages, it will run yes

vscode and even use the venv if you want to, you have to switch to that venv interpreter

[orchid ice]

so van i still shift to venv or is a cumbersome task now?

[half mortar]

i dont use vscode, so im fuzzy about the details

[half mortar]

super easy, i shared the image above me doing it

[half mortar]

this is me creating and using a venv

[orchid ice]

cool i am thinking uninstalling the 3.9 version and reinstall the package showing errors

[half mortar]

remember that you have to install all packages you need in the new venv

flask, brypt and anything else you are using

[orchid ice]

will it work smoothly then?

[half mortar]

yes it will, that is why it was invented

[orchid ice]

so how do i set it up?

[half mortar]

from your project folder

py -m venv .venv

.venv\Scripts\activate

you only create the venv once, and you activate it with the second command

deactivate when you are done, or close the terminal window

[orchid ice]

okay

[half mortar]

I have a meeting now, so i cant invest more time with you, you can always ask me later if you want more help

[orchid ice]

Bro it worked

it is hashed

thanks a lot man

[half mortar]

excellent

you see how imporatnt it is to have a venv

worked instantly

[orchid ice]

i learned more today that entire python class

[half mortar]

im glad, come back later if you want to learn more!

[orchid ice]

about the flask and stuff

thanks again man!

[half mortar]

my pleasure

[orchid ice]

Definitely!

see ya!

[edgy goblet]

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