#esoteric-python | Python | Page 57

lusty vector Jul 23, 2018, 9:46 AM

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Ah. I did manage to know that it used recursion though

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Chibli, it appears so. <2 letters long and it returns a 1

viral hedge Jul 23, 2018, 9:48 AM

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Or well, True / False since it's a bool

buoyant agate Jul 23, 2018, 9:48 AM

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there's 2 exit conditions, <2 characters or the first and last character are not the same

lusty vector Jul 23, 2018, 9:49 AM

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Okay. Next one please. 😃

tropic gulch Jul 23, 2018, 9:50 AM

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😻

sick hound Jul 23, 2018, 9:51 AM

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if a == True:
    a = True
elif a == False:
    a = True```

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the gore

unique shoal Jul 23, 2018, 9:52 AM

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mp = lambda s: reduce(lambda x, y: x+(y&1), map(s.count, set(s)), 0) < 2

(as with many traditional golfing problems, this one relies on the oft missed reduce builtin)

sick hound Jul 23, 2018, 9:52 AM

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Can i ask how code golfing works?

unique shoal Jul 23, 2018, 9:52 AM

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make it as short as you possibly can

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that's really all there is to it

brisk zenith Jul 23, 2018, 9:52 AM

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yeah

sick hound Jul 23, 2018, 9:53 AM

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i am not able to process that already, how to make it shorter?

unique shoal Jul 23, 2018, 9:53 AM

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depending on who you talk to whitespace may or may not count

brisk zenith Jul 23, 2018, 9:53 AM

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remove whitespace, shorten variable names, sacrifice speed for smallness

sick hound Jul 23, 2018, 9:54 AM

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and the space between lambda x, y isn't neccessary, right?

unique shoal Jul 23, 2018, 9:54 AM

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it is not

dense spire Jul 23, 2018, 9:54 AM

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the whole lambda isn't neccessary.

brisk zenith Jul 23, 2018, 9:54 AM

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none of the spaces are

unique shoal Jul 23, 2018, 9:54 AM

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the platform I wrote this for didn't count it against me

brisk zenith Jul 23, 2018, 9:54 AM

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bar the one after the lambda

lusty vector Jul 23, 2018, 9:55 AM

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I donno what reduce or map does. So not gonna try

buoyant agate Jul 23, 2018, 9:55 AM

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from functools import reduce

sick hound Jul 23, 2018, 9:56 AM

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map applies a function to each item in an iterable

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reduce takes a function that takes two arguments and does something like this:
reduce(func, [1, 2, 3, 4]) -> func(func(func(1, 2), 3), 4)

misty trellis Jul 23, 2018, 9:58 AM

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So can I just ask for a gold python of something just for sheer fun?

brisk zenith Jul 23, 2018, 9:58 AM

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oh fancy

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write a function to determine whether a given number is prime or not prime. return a bool

misty trellis Jul 23, 2018, 10:00 AM

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What's the shortest python code you can make to encode a str in Caesar cipher

brisk zenith Jul 23, 2018, 10:00 AM

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f=lambda n:all(n%q for q in range(2,n)) this is the shortest i can do for my prime one

sick hound Jul 23, 2018, 10:01 AM

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yeah thats probably the shortest you can get

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well 6 ams a good time as any to sleep i guess

brisk zenith Jul 23, 2018, 10:01 AM

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haha

viral hedge Jul 23, 2018, 10:03 AM

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These lambdas have me stumped in Lucys snippet

buoyant agate Jul 23, 2018, 10:04 AM

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I think I wrote a golf caesar cipher at one point, gonna try find it

unique shoal Jul 23, 2018, 10:05 AM

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I've got an expanded form I used to reason it out for myself after I found it and couldn't remember what it did, if you're interested

brisk zenith Jul 23, 2018, 10:05 AM

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i read caesar salad

sick hound Jul 23, 2018, 10:05 AM

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I am lucy

buoyant agate Jul 23, 2018, 10:05 AM

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def shift(s: str, key: int = 13) -> str:
    return ''.join(chr((ord(c) - (65 if c.isupper() else 97) + key) % 26 + (65 if c.isupper() else 97)) if c.isalpha() else c for c in s)```

lusty vector Jul 23, 2018, 10:05 AM

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No. You are not lucy 😛

brisk zenith Jul 23, 2018, 10:06 AM

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typehinting in golf

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why not use a lambda? :D

unique shoal Jul 23, 2018, 10:07 AM

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def parity_reduction(a, b):
    return a + (a & b)

def can_make_palindrome(string):
    return reduce(parity_reduction, [s.count(x) for x in set(x)], 0) < 2```
@viral hedge @sick hound

buoyant agate Jul 23, 2018, 10:07 AM

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look, you can golf it more if you want, that's what I had

brisk zenith Jul 23, 2018, 10:10 AM

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f=lambda s,k:''.join(chr((ord(c)-(65 if c.isupper()else 97)+k)%26+(65 if c.isupper() else 97))if c.isalpha()else c for c in s)```
perhaps this works

sick hound Jul 23, 2018, 10:12 AM

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thanks lacy

viral hedge Jul 23, 2018, 10:13 AM

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Im gonna have to sit down with that one when the coffee kicks in 😅

brisk zenith Jul 23, 2018, 10:13 AM

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im sure you can squish more whitespace from it

lusty vector Jul 23, 2018, 10:13 AM

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What is Caesers cipher?

buoyant agate Jul 23, 2018, 10:17 AM

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You encrypt a string using an offset between 1 - 25, let's say the offset is 1, A -> B, B -> C ... Z -> A All letters are shifted 1 to the right,

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And then decrypting is the same but to the left (subtract)

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https://en.wikipedia.org/wiki/Caesar_cipher more info if you want a read

tropic gulch Jul 23, 2018, 10:25 AM

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okay, so upper/lowercase is prserved, and each of them is rotated separately, like y + 3 = b and Y + 3 = B ?

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and all non-alphabetic characters stay as they are

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Okay, done in 110 bytes.

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f=lambda s,k:"".join(chr([ord(c),(ord(c)+k-97)%26+97,(ord(c)+k-65)%26+65][c.isalpha()+c.isupper()])for c in s)

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>>> f("Hello, World!", 3)
'Khoor, Zruog!'

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Anybody beating that? 😎

buoyant agate Jul 23, 2018, 10:39 AM

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You could probably do o=ord;f=...

brisk zenith Jul 23, 2018, 10:40 AM

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not in a lambda

sick hound Jul 23, 2018, 10:40 AM

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o=ord;f=lambda s,k:"".join(chr([o(c),(o(c)+k-97)%26+97,(o(c)+k-65)%26+65][c.isalpha()+c.isupper()])for c in s)```

wind maple Jul 23, 2018, 10:40 AM

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def f(s,k): is shorter than a lambda

buoyant agate Jul 23, 2018, 10:41 AM

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You still need to return though

tropic gulch Jul 23, 2018, 10:41 AM

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but with def you need return

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ninja'd >_>

brisk zenith Jul 23, 2018, 10:41 AM

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haha

wind maple Jul 23, 2018, 10:41 AM

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right

tropic gulch Jul 23, 2018, 10:41 AM

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yeah, o=ord looks good

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thought about that, but haven't added it yet because I wondered if there might be a way to use just one instead of 3

brisk zenith Jul 23, 2018, 10:42 AM

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why not store 65 and 97 in one-letter variables?

buoyant agate Jul 23, 2018, 10:42 AM

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I don't think it actually saved any characters in this case

tropic gulch Jul 23, 2018, 10:42 AM

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6565 is shorter than a=65aa

cunning wave Jul 23, 2018, 10:43 AM

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So we can post any bad python here?

tropic gulch Jul 23, 2018, 10:44 AM

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only the best bad Python though

cunning wave Jul 23, 2018, 10:45 AM

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Hm

brisk zenith Jul 23, 2018, 10:45 AM

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hm

cunning wave Jul 23, 2018, 10:45 AM

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id(MyClass()) == id(MyClass))

Will always return true

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Is that good ?

brisk zenith Jul 23, 2018, 10:46 AM

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no

cunning wave Jul 23, 2018, 10:47 AM

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:(

sick hound Jul 23, 2018, 10:47 AM

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class A:
 def __new__(_):return A```

buoyant agate Jul 23, 2018, 10:47 AM

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What have you done to make that happen?

cunning wave Jul 23, 2018, 10:47 AM

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Nothing it just worked

buoyant agate Jul 23, 2018, 10:47 AM

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>>> class A: pass
>>> id(A()) == id(A)
False```?

cunning wave Jul 23, 2018, 10:47 AM

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HUH

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it worked for me

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When I did it last time

sick hound Jul 23, 2018, 10:48 AM

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def id(a):return 0```

viral hedge Jul 23, 2018, 10:48 AM

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isn't you parenthesis misplaced wattle?

sick hound Jul 23, 2018, 10:49 AM

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No, nix's parenthesis misplaced

viral hedge Jul 23, 2018, 10:49 AM

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^That's the one

cunning wave Jul 23, 2018, 10:49 AM

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I remember reading that on a GitHub repo about python fuckups too

viral hedge Jul 23, 2018, 10:49 AM

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Or rather, 1 too many

cunning wave Jul 23, 2018, 10:49 AM

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Oh did I missplace?

sick hound Jul 23, 2018, 10:49 AM

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id(MyClass()) == id(MyClass) # extra bracket -> )```

cunning wave Jul 23, 2018, 10:49 AM

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I type on mobile

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Woopsie

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It wasn't id

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Ooh

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It's hash

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hash(MyClass()) == hash(MyClass())

wind maple Jul 23, 2018, 10:51 AM

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This is a CPython optimization

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And I also think it's repl-only

slim pecan Jul 23, 2018, 10:51 AM

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that definitely won't always be true though

cunning wave Jul 23, 2018, 10:51 AM

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📎 Screenshot_20180723-125143_FastHub.jpg

wind maple Jul 23, 2018, 10:51 AM

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it allocates the same space twice

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For whatever reason

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I think it's just that hash() creates a "scope"

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but the is statement doesn't because it's an expression

cunning wave Jul 23, 2018, 10:53 AM

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This is also good

📎 Screenshot_20180723-125255_FastHub.jpg

wind maple Jul 23, 2018, 10:53 AM

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Also a CPython optimization

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in pypy that behaved differently IIRC

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The range was larger or something

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When it turns a = 257; b = 257 into a code object it sees that the value is the same for both and uses the same object for both

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But it can't do it when you define them separately

cunning wave Jul 23, 2018, 10:54 AM

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📎 Screenshot_20180723-125445_FastHub.jpg

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IMPLICIT IN PYTHON

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Unacceptable

wind maple Jul 23, 2018, 10:56 AM

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more implicit is more than implicit

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Remind me to demonstrate what I mean

cunning wave Jul 23, 2018, 10:57 AM

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Demonstrate what you mean @wind maple

wind maple Jul 23, 2018, 10:57 AM

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I'm watching a talk

slim pecan Jul 23, 2018, 10:58 AM

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What talk is it?

cunning wave Jul 23, 2018, 11:00 AM

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Jesus Christ

📎 Screenshot_20180723-130033_FastHub.jpg

wind maple Jul 23, 2018, 11:00 AM

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https://www.youtube.com/watch?v=6DPkyvkMkk8

YouTube

CppCon

CppCon 2016: Walter E. Brown “What C++ Programmers Need to Know ...

http://CppCon.org — Presentation Slides, PDFs, Source Code and other presenter materials are available at: https://github.com/cppcon/cppcon2016 — The generat...

▶ Play video

brisk zenith Jul 23, 2018, 11:06 AM

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@wind maple ```py
def _exec_code(code, *args, **kwargs):
"""Execute a CodeType object with args and kwargs."""

# We re-assign the bytecode of this empty
# function with the CodeType object so that
# it can be executed in a normal manner.
util = lambda *args, **kwargs: None
util.__code__ = code

return util(*args, **kwargs)

wind maple Jul 23, 2018, 11:06 AM

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but why

brisk zenith Jul 23, 2018, 11:06 AM

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so the code can be executed easily :P

misty trellis Jul 23, 2018, 11:32 AM

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You did the Caesar quite well now can you evalute a grid of Conway's game of Life in the uglisest shortest code as possible?
(You can use whatever data type for the grid. Go crazy)

brisk zenith Jul 23, 2018, 11:34 AM

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use a set :^)

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interesting challenge would be to use an int for the grid

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very possible

misty trellis Jul 23, 2018, 11:35 AM

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One number? MHM

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Yea

brisk zenith Jul 23, 2018, 11:35 AM

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yup

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use the int as an array of 1s (alive) or 0s (dead)

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10010110

misty trellis Jul 23, 2018, 11:36 AM

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Yeah but conways is 2d

brisk zenith Jul 23, 2018, 11:37 AM

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add a meta-byte at the end which specifies the width of the grid

tight hemlock Jul 23, 2018, 11:38 AM

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64 bit ints -> 8x8 grid

brisk zenith Jul 23, 2018, 11:38 AM

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so a width of 2 would allow the program to know that 10010110 would become

10
01
01
10```

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or that too yeah

misty trellis Jul 23, 2018, 11:38 AM

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Yeah and now just from that int create a new int of the new gen

brisk zenith Jul 23, 2018, 11:38 AM

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sure

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bitwise operations

tight hemlock Jul 23, 2018, 11:38 AM

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lots of bitwise operators

brisk zenith Jul 23, 2018, 11:38 AM

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yeah

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lots

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i'mma give it a go

misty trellis Jul 23, 2018, 11:38 AM

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Gl

brisk zenith Jul 23, 2018, 11:52 AM

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if __name__ == '__main__':
    game = GameOfLifeWithAnIntAsTheGridDotPHP.from_array([
        [0, 0, 0, 0, 0, 0, 0, 0],
        [0, 0, 0, 0, 0, 0, 0, 0],
        [0, 0, 0, 0, 0, 0, 0, 0],
        [0, 0, 0, 0, 0, 0, 0, 0],
        [0, 0, 0, 0, 0, 0, 0, 0],
        [0, 0, 0, 0, 0, 0, 0, 0],
        [0, 0, 0, 0, 0, 0, 0, 0],
        [0, 0, 0, 0, 1, 1, 1, 1]
    ])

    print(game.grid)  # 15
    print(f"{game.grid:064b}")  # 0000000000000000000000000000000000000000000000000000000000001111

light patrol Jul 23, 2018, 11:52 AM

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what is this

brisk zenith Jul 23, 2018, 11:52 AM

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hell

light patrol Jul 23, 2018, 11:52 AM

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what is the purpose of this channel

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how can something be 'barely' python

brisk zenith Jul 23, 2018, 11:52 AM

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read the channel topic

📎 unknown.png

tight hemlock Jul 23, 2018, 11:52 AM

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read channel topic

light patrol Jul 23, 2018, 11:52 AM

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no, i can read

tight hemlock Jul 23, 2018, 11:52 AM

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also

light patrol Jul 23, 2018, 11:53 AM

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thanks for helping me!

tight hemlock Jul 23, 2018, 11:53 AM

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reee using python for bit manipulations

brisk zenith Jul 23, 2018, 11:53 AM

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using python for bit manipulations

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:^)

light patrol Jul 23, 2018, 11:53 AM

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whats bad about that

brisk zenith Jul 23, 2018, 11:53 AM

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python

tight hemlock Jul 23, 2018, 11:53 AM

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python is not good at bit stuff

light patrol Jul 23, 2018, 11:53 AM

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so

brisk zenith Jul 23, 2018, 11:53 AM

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python is just so high-level that it's impractical to do bit-manipulation

light patrol Jul 23, 2018, 11:54 AM

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i still do it 😎

brisk zenith Jul 23, 2018, 11:54 AM

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same :D

tight hemlock Jul 23, 2018, 11:54 AM

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yeah with the type dynamically changing and resizing and all

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you can never be sure the bit manipulaitons are going to do what you want them to do

light patrol Jul 23, 2018, 11:54 AM

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thank god python isn't a strong typed language

brisk zenith Jul 23, 2018, 11:54 AM

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it can be if you modify the bytecode :^)

tight hemlock Jul 23, 2018, 11:54 AM

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it is strongly typed

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its not statically typed

light patrol Jul 23, 2018, 11:55 AM

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that is what i meant

brisk zenith Jul 23, 2018, 11:55 AM

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yeah

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static typing might actually be possible with bytecode modifications, now that i think of it

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(this is why the channel's called barely-python btw)

light patrol Jul 23, 2018, 11:56 AM

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but hence it is still python

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this is not quantum physics - one cannot be python and barely python at the same time

tight hemlock Jul 23, 2018, 11:57 AM

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yes

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barely

light patrol Jul 23, 2018, 11:57 AM

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it is either python or not python

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can ice cream be bare?

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can you have barely-ice cream

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no.

tight hemlock Jul 23, 2018, 11:57 AM

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yes

light patrol Jul 23, 2018, 11:57 AM

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what

brisk zenith Jul 23, 2018, 11:58 AM

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modifying the python bytecode so that it acts like not-python is pretty barely-python to me

buoyant agate Jul 23, 2018, 11:58 AM

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Best so far is probably type hinting all your variables and having a linter yell at you if it is wrong

tight hemlock Jul 23, 2018, 11:58 AM

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also python vm languages

brisk zenith Jul 23, 2018, 11:58 AM

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yeah

misty trellis Jul 23, 2018, 11:58 AM

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Lol nice progress juanita

brisk zenith Jul 23, 2018, 11:58 AM

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thanks haha

light patrol Jul 23, 2018, 11:58 AM

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what is that in your profile picture

tight hemlock Jul 23, 2018, 11:58 AM

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mine?

brisk zenith Jul 23, 2018, 11:59 AM

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whose?

light patrol Jul 23, 2018, 11:59 AM

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yours

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i think rags' is pretty obvious.

tight hemlock Jul 23, 2018, 11:59 AM

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i'm not sure whats in mine

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so

brisk zenith Jul 23, 2018, 11:59 AM

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alpaca.

📎 unknown.png

misty trellis Jul 23, 2018, 11:59 AM

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OMG

light patrol Jul 23, 2018, 11:59 AM

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i like how you have that image on demand

brisk zenith Jul 23, 2018, 11:59 AM

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hell yeah

tight hemlock Jul 23, 2018, 12:00 PM

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oh wow i was thinking its like a cell microscope closeup or something

light patrol Jul 23, 2018, 12:00 PM

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@tight hemlock theres hella shit in your profile picture

brisk zenith Jul 23, 2018, 12:00 PM

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i should change it because nobody knows what it is until i tell them haha

misty trellis Jul 23, 2018, 12:00 PM

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Wow this is too offtopic

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Btw

light patrol Jul 23, 2018, 12:00 PM

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don't change it, juan

brisk zenith Jul 23, 2018, 12:00 PM

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it's barely even python, i guess you could say

misty trellis Jul 23, 2018, 12:00 PM

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I HAVE ON TOO

📎 JPEG_20180723_150006.jpg

brisk zenith Jul 23, 2018, 12:00 PM

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GOOD

misty trellis Jul 23, 2018, 12:00 PM

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ONE*

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YEE

light patrol Jul 23, 2018, 12:00 PM

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wait juan

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is that your alpaca

wind maple Jul 23, 2018, 12:01 PM

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>>> class CinMeta(type):
...     def __lshift__(self, other):
...         print(other, end='')
...         return self
...
>>> class cin(metaclass=CinMeta):
...     pass
...
>>> cin << "test" << 123 << '\n'
test123```

light patrol Jul 23, 2018, 12:01 PM

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or is it off google

brisk zenith Jul 23, 2018, 12:01 PM

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nope, it's one of my friends' alpacas

light patrol Jul 23, 2018, 12:01 PM

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i see

brisk zenith Jul 23, 2018, 12:01 PM

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@wind maple but does it assign? :^)

misty trellis Jul 23, 2018, 12:01 PM

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Guys offtopicccccc

wind maple Jul 23, 2018, 12:01 PM

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assign what

light patrol Jul 23, 2018, 12:01 PM

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can we not turn this into like C

brisk zenith Jul 23, 2018, 12:01 PM

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cin >> varname;```would be cin

misty trellis Jul 23, 2018, 12:01 PM

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Why not

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Lmao

wind maple Jul 23, 2018, 12:01 PM

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trivial to imlpement

light patrol Jul 23, 2018, 12:02 PM

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so don't.

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move on.

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noone needs that.

brisk zenith Jul 23, 2018, 12:02 PM

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i've already done it

wind maple Jul 23, 2018, 12:02 PM

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You're in the wrong channel lad

light patrol Jul 23, 2018, 12:02 PM

#

.

wind maple Jul 23, 2018, 12:02 PM

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This is the "awful hacks" channel

brisk zenith Jul 23, 2018, 12:02 PM

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https://gist.github.com/kingdom5500/5ef65ab3fb414df3857074872837c953

Gist

C++ style I/O implementation in Python. Oh dear.

misty trellis Jul 23, 2018, 12:02 PM

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"I don't want to code in C"

Goes to python.
"Let's program C in Python!"

light patrol Jul 23, 2018, 12:02 PM

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i thought it was just the 'hacks' channel

wind maple Jul 23, 2018, 12:02 PM

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I have to say this is hot garbage

brisk zenith Jul 23, 2018, 12:02 PM

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@misty trellis very yes

light patrol Jul 23, 2018, 12:02 PM

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is that a positive

wind maple Jul 23, 2018, 12:02 PM

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cin >> undefined isn't valid in C++ either

brisk zenith Jul 23, 2018, 12:02 PM

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it's garbage to begin with, so hot is an improvement

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yes i know, i implemented that on purpose

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because this is still python

wind maple Jul 23, 2018, 12:03 PM

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does it have cin semantics or is it just input

brisk zenith Jul 23, 2018, 12:03 PM

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it allows for c++ style but not the exact same semantics

light patrol Jul 23, 2018, 12:03 PM

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yes but juan

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do you have the book

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the c++ programming language third edition by bjarne stroustrup, the creator of c++

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rrp $50 holy shit

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i got it for like $8

brisk zenith Jul 23, 2018, 12:04 PM

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@wind maple i was planning to figure out a way of making them auto-cast to their typehinted values, but __annotations__ is evaluated at runtime. i have ideas though

tight hemlock Jul 23, 2018, 12:05 PM

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a tour of C++ edition 2 coming out soon updated for C++17 and some of C++20, if anyone wants to get into C++ right now

light patrol Jul 23, 2018, 12:05 PM

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how old is this book

tight hemlock Jul 23, 2018, 12:05 PM

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oh already out

light patrol Jul 23, 2018, 12:05 PM

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no, i meant mine

tight hemlock Jul 23, 2018, 12:06 PM

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an year or two? not v old

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an year i think

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they're both by bjourne btw

light patrol Jul 23, 2018, 12:06 PM

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...

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published june 1997

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this book is older than me

tight hemlock Jul 23, 2018, 12:06 PM

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thats the first edition

light patrol Jul 23, 2018, 12:06 PM

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third

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this is the third edition

tight hemlock Jul 23, 2018, 12:07 PM

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third edition was 2013

light patrol Jul 23, 2018, 12:07 PM

#

📎 Screen_Shot_2018-07-23_at_13.07.15.png

tight hemlock Jul 23, 2018, 12:07 PM

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it contains C++11 info, it cant be published 1997

brisk zenith Jul 23, 2018, 12:07 PM

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this is barely even barely-python

light patrol Jul 23, 2018, 12:07 PM

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the third edition, dude

tight hemlock Jul 23, 2018, 12:07 PM

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oh whoops confused 4 and 3

brisk zenith Jul 23, 2018, 12:07 PM

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trusts a single source

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:^)

tight hemlock Jul 23, 2018, 12:08 PM

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3rd is published 2000

light patrol Jul 23, 2018, 12:08 PM

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june 1997

brisk zenith Jul 23, 2018, 12:08 PM

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i was published in 2002

light patrol Jul 23, 2018, 12:08 PM

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ok

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yes youre correct

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february 2000

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is this book even reliable anymore?

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took 13+ years for a new edition to be published

tight hemlock Jul 23, 2018, 12:10 PM

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yes it is

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new version released because modern c++ had considerably changed

light patrol Jul 23, 2018, 12:10 PM

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therefor

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is my book reliable?

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what changes had to be?

tight hemlock Jul 23, 2018, 12:12 PM

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new language editions came out, some features and patterns became standard

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btw

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#ot

brisk zenith Jul 23, 2018, 12:12 PM

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thank you

light patrol Jul 23, 2018, 12:12 PM

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technically speaking this is barely python

brisk zenith Jul 23, 2018, 12:13 PM

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no

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this is not python

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📎 unknown.png

light patrol Jul 23, 2018, 12:13 PM

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this is python in a thinly dispersed or scattered way

#

📎 Screen_Shot_2018-07-23_at_13.13.42.png

brisk zenith Jul 23, 2018, 12:14 PM

#

no, it really isn't. please move to offtopic

viral hedge Jul 23, 2018, 2:04 PM

#

I once tried to shorten my code for a machine learning task that only allowed x amount of characters. Does this belong here? py from sklearn.neighbors import KNeighborsRegressor as kn;from sklearn.model_selection import train_test_split as tts;import pandas as p;from numpy import array as a;d = p.read_csv("Flaveria.csv");d.iloc[:, 0] = d.iloc[:, 0].apply(lambda n: {"L":0,"M":2,"H":3}.get(n));d = p.concat([d.drop("species", axis=1),p.get_dummies(d["species"])], axis=1);X, x, Y, y = tts(a(d.loc[:, d.columns != "Plant Weight(g)"].values), a(d["Plant Weight(g)"].values), test_size=0.15);print(kn(n_neighbors=3).fit(X, Y).score(x, y))

slim pecan Jul 23, 2018, 2:05 PM

#

I am both amused and horrified

viral hedge Jul 23, 2018, 2:08 PM

#

I probably could have used iloc in pandas to shorten it a bit more, but i met the requirements feelskawaiiman

sharp canyon Jul 23, 2018, 2:20 PM

#

Alright, dumb question time from Hemlock. ; just signifies end of line as it would in most other languages?

tropic gulch Jul 23, 2018, 2:20 PM

#

yep

slim pecan Jul 23, 2018, 2:21 PM

#

yeah it's usually the first rule you break when you golf

#

using ;

sharp canyon Jul 23, 2018, 2:21 PM

#

Does using ; in regular code break things in regular Python code or is it just frowned upon because it's not needed?

brave bison Jul 23, 2018, 2:21 PM

#

i use ; in c++

slim pecan Jul 23, 2018, 2:21 PM

#

it's a PEP8 violation

sharp canyon Jul 23, 2018, 2:21 PM

#

Gotcha

slim pecan Jul 23, 2018, 2:21 PM

#

otherwise it's fine, yeah

#

this isn't a C++ channel though l33t :P

sharp canyon Jul 23, 2018, 2:22 PM

#

Sudden urge to turn my screen name to "PEP8 is my bible" for a bit...

brave bison Jul 23, 2018, 2:23 PM

#

i use "" instead of '' for strings

sharp canyon Jul 23, 2018, 2:23 PM

#

I mean you can use either

brave bison Jul 23, 2018, 2:23 PM

#

thought pep 8 is only '' for strings

sharp canyon Jul 23, 2018, 2:24 PM

#

I thought it was a matter of what the string was for. If it's something the user is going to see you use double quote marks, if it's just an internal string it's single?

#

Either way, not a big deal

viral hedge Jul 23, 2018, 2:24 PM

#

Depends on keyboard layout as well id assume

slim pecan Jul 23, 2018, 2:24 PM

#

I use ""

#

'' is weird to me

#

I mean, you wouldn't use 'text' to quote someone in English

viral hedge Jul 23, 2018, 2:24 PM

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' is odd for me to type since i have to use my right pinky to hit it, while " is just shift + 2

brave bison Jul 23, 2018, 2:25 PM

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u have a weird keyboard

viral hedge Jul 23, 2018, 2:25 PM

#

Scandinavian layout

slim pecan Jul 23, 2018, 2:25 PM

#

it's a non-american keyboard

sharp canyon Jul 23, 2018, 2:25 PM

#

That's normal for non US keyboards, l33t

slim pecan Jul 23, 2018, 2:25 PM

#

mine is like that too

brave bison Jul 23, 2018, 2:25 PM

#

im in europe and everyone uses american layout

sharp canyon Jul 23, 2018, 2:25 PM

#

What part of Europe, though

slim pecan Jul 23, 2018, 2:25 PM

#

almost nobody uses american layout in europe

#

lol

sharp canyon Jul 23, 2018, 2:25 PM

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English speaking part?

brave bison Jul 23, 2018, 2:25 PM

#

no

#

nobody speaks english basically

slim pecan Jul 23, 2018, 2:26 PM

#

Where's that, romania or somewhere like that?

brave bison Jul 23, 2018, 2:26 PM

#

yes

sharp canyon Jul 23, 2018, 2:26 PM

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Latvia. Under the benevolent rule of Dr. Doom

#

Either way, so golfing is pretty much just a crap ton of abusing aliasing, lambdas and other such tricks?

viral hedge Jul 23, 2018, 2:27 PM

#

For show, eventhough it's probably getting a bit off topic; here's my layout

📎 2000px-KB_Norway.png

sharp canyon Jul 23, 2018, 2:27 PM

#

How do you access the grey characters on those keys?

brave bison Jul 23, 2018, 2:27 PM

#

weird and unnatural

sharp canyon Jul 23, 2018, 2:27 PM

#

Alt?

viral hedge Jul 23, 2018, 2:27 PM

#

alt

sharp canyon Jul 23, 2018, 2:27 PM

#

Cool

viral hedge Jul 23, 2018, 2:28 PM

#

It's just what you're trained to use.

#

Mine makes sense to me, just as yours make sense to you (even though things like <> and {} are slightly odd)

brave bison Jul 23, 2018, 2:28 PM

#

american layout actually makes common sense

slim pecan Jul 23, 2018, 2:28 PM

#

it's usually right alt I think, yeah

sharp canyon Jul 23, 2018, 2:29 PM

#

I'd argue the point more, l33t, but this isn't off-topic

slim pecan Jul 23, 2018, 2:29 PM

#

yeah

#

and it's not weird because you're not used to it :P

wind maple Jul 23, 2018, 2:32 PM

#

PEP8 doesn't actually forbid the use of semicolon

#

What it does say is "don't cram stuff you don't need to together"

sharp canyon Jul 23, 2018, 2:33 PM

#

Seems like most linters will frown on it

#

PyCharm's default certainly does

viral hedge Jul 23, 2018, 2:33 PM

#

vscode just make em ugly brown (with my style at least)

📎 unknown.png

tropic gulch Jul 23, 2018, 2:34 PM

#

Actually semicolons don't give you an advantage in golf normally

#

Only inside indented blocks

#

Because both a linebrak and a semicolon are one character

#

But it's more handy to oneline stuff usually

#

as long as it's not too long at least.

sharp canyon Jul 23, 2018, 2:35 PM

#

Can you give a basic example of how indented stuff is handled in golf? I've always been confused by that since Python is based on whitespace

tropic gulch Jul 23, 2018, 2:36 PM

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If you just have one indentation level, you can inline it

#

once you get multiple, you have to split all but the innermost on separate lines

viral hedge Jul 23, 2018, 2:37 PM

#

I assume, that when you start writing golf code with multiple indentations you may want to rethink your approach?

tropic gulch Jul 23, 2018, 2:37 PM

#

for i in range(42):x=i**2print(x)

for i in range(42):
 if i%2==0:x=i**2;print(x)

for example, IIRC

#

sometimes netsed loops/conditions are unavoidable

#

and the cost of one character per indentation level might be lower than refactoring

sharp canyon Jul 23, 2018, 2:39 PM

#

Gotcha

brave bison Jul 23, 2018, 2:45 PM

#

bot.help()

slim pecan Jul 23, 2018, 2:45 PM

#

This isn't #bot-commands

brave bison Jul 23, 2018, 2:45 PM

#

bot.pep()

#

nvm

slim pecan Jul 23, 2018, 2:45 PM

#

@brave bison Go to #bot-commands

slim pecan Jul 23, 2018, 3:04 PM

#

@fast torrent Why are you spamming?

fast torrent Jul 23, 2018, 3:04 PM

#

Sry won't happen again

slim pecan Jul 23, 2018, 3:05 PM

#

Good squishy

sick hound Jul 23, 2018, 3:54 PM

#

from ctypes import *;print(cast(id(7106412),POINTER(c_char))[24:27].decode())```

calm rampart Jul 23, 2018, 4:50 PM

#

7106412 .to_bytes(3,'big').decode()```

bitter comet Jul 23, 2018, 6:41 PM

#

Has anyone worked with SLAM stuff before?

pine edge Jul 23, 2018, 7:05 PM

#

python gore

#

(id(1+1)==id(1+1))^(id(10**5+1)==id(10**5+1)) and id(100000000000)==id(100000000000)

#

anyone who can adequately explain why this returns true earns my respect

#

i wrote it and i only have a vague idea of why

calm rampart Jul 23, 2018, 7:05 PM

#

@pine edge because of constant folding.

pine edge Jul 23, 2018, 7:06 PM

#

that explains the second and third booleans, but why does the expression 1+1 return a constant object

calm rampart Jul 23, 2018, 7:06 PM

#

 1           0 LOAD_NAME                0 (id)
             2 LOAD_CONST               0 (2)
             4 CALL_FUNCTION            1
             6 LOAD_NAME                0 (id)
             8 LOAD_CONST               0 (2)
            10 CALL_FUNCTION            1
            12 COMPARE_OP               2 (==)
            14 LOAD_NAME                0 (id)
            16 LOAD_CONST               1 (100001)
            18 CALL_FUNCTION            1
            20 LOAD_NAME                0 (id)
            22 LOAD_CONST               1 (100001)
            24 CALL_FUNCTION            1
            26 COMPARE_OP               2 (==)
            28 BINARY_XOR
            30 JUMP_IF_FALSE_OR_POP    46
            32 LOAD_NAME                0 (id)
            34 LOAD_CONST               2 (100000000000)
            36 CALL_FUNCTION            1
            38 LOAD_NAME                0 (id)
            40 LOAD_CONST               2 (100000000000)
            42 CALL_FUNCTION            1
            44 COMPARE_OP               2 (==)
       >>   46 RETURN_VALUE```

#

the entire expression is evaluated at compile time

#

well, the entire each int expression

pine edge Jul 23, 2018, 7:07 PM

#

wait so if all of those are loaded as constants then why

#

not (id(10**5+1)==id(10**5+1))

calm rampart Jul 23, 2018, 7:07 PM

#

er

#

wait

#

i didn't notice the xor part, and it returns false for me

#

however, in your case, if it does return true, I can still explain

#

the optimization isn't, for whatever reason, happening to 10**5+1

pine edge Jul 23, 2018, 7:09 PM

#

that's kind of a cop out but i'll allow it

#

👏

calm rampart Jul 23, 2018, 7:10 PM

#

but id(1+1) is still constant because all integers with values between 0 and 256 are interned

#

even if it's not constant-folded

pine edge Jul 23, 2018, 7:10 PM

#

yeah i remember that comment in the cpython source

calm rampart Jul 23, 2018, 7:10 PM

#

between -5 and 256.

#

and the 100000000000 is 100000000000 because all integer literals with the same value in the same source code unit get the same constant object regardless

pine edge Jul 23, 2018, 7:16 PM

#

i didn't know about the literal scan thing, that's kinda neat

#

ok you can do some serious fucking spooky action at a distance with that literal scan thing

#

any two parts of code can use the gc module to interact via seemingly disconnected literal values

#

more observations: id(9001)==id(eval("9001")) is false because evaluation occurs somewhere else, but id(eval("9001"))==id(eval("9001")) works, because apparently consecutive eval calls happen in the same parser'

tropic gulch Jul 23, 2018, 7:23 PM

#

GWchadThinkeyes

novel vine Jul 23, 2018, 7:35 PM

#

So meta programming is possible in C++ (where things evaluate at compile time. Essentially. ) is that also possible in python on a large scale?

#

https://jguegant.github.io/blogs/tech/meta-crush-saga.html c++ example

brisk zenith Jul 23, 2018, 7:37 PM

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i'd like this, it could make for some interesting AST fuckery

#

can i claim this channel to be my home on this server? i just belong here. :P

solar osprey Jul 23, 2018, 7:47 PM

#

what

#

what the hell

#

what

#

uh what

#

what's going on there

#

i don't understand anything that's being posted in this channel

pine edge Jul 23, 2018, 7:50 PM

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this is extremely rediculous

brisk zenith Jul 23, 2018, 7:55 PM

#

@ashen rivet you're really not missing out on anything. most of the stuff you see here should not be used in your genuine projects :D

unique shoal Jul 23, 2018, 7:56 PM

#

juan you still have to help ppl don't spend ALL your time here

#

one might call this place the opposite of helping people

sick hound Jul 23, 2018, 8:09 PM

#

golfing is stupid

#

fuck golfing

#

goes against all common sense and logic

viral hedge Jul 23, 2018, 8:10 PM

#

That's the point

sick hound Jul 23, 2018, 8:24 PM

#

@brisk zenith post some challenges :p

calm rampart Jul 23, 2018, 8:41 PM

#

hey maybe i should clean up my __build_class__ for allowing nested classes to inherit from the containing class and post it in here

brisk zenith Jul 23, 2018, 9:17 PM

#

@sick hound
golf challenges?

tictactoe
connect 4
image to ascii: input the filename and dimensions in chars
random maths quiz - gradual difficulty increase, scoring, persistent leaderboard
ascii sierpinski triangle: input amount of iterations

#

i'll be really happy if somebody knows a way to execute code at "compile time" (before AST evaluation)

calm rampart Jul 23, 2018, 9:24 PM

#

I could swear that there was some trick demonstrated on the python mailing list or something where you define an encoding that transforms the source of python files

#

maybe you could do something with importlib

brisk zenith Jul 23, 2018, 9:25 PM

#

hmm

novel vine Jul 23, 2018, 9:44 PM

#

dont give Juan ideas

brisk zenith Jul 23, 2018, 9:49 PM

#

haha

#

the moral of this channel right there

tropic gulch Jul 23, 2018, 10:39 PM

#

I just found this somewhere in my chat history...

#

(lambda _, __, ___, ____, _____, ______, _______, ________:
    getattr(
        __import__(True.__class__.__name__[_] + [].__class__.__name__[__]),
        ().__class__.__eq__.__class__.__name__[:__] +
        ().__iter__().__class__.__name__[_____:________]
    )(
        _, (lambda _, __, ___: _(_, __, ___))(
            lambda _, __, ___:
                chr(___ % __) + _(_, __, ___ // __) if ___ else
                (lambda: _).func_code.co_lnotab,
            _ << ________,
            (((_____ << ____) + _) << ((___ << _____) - ___)) + (((((___ << __)
            - _) << ___) + _) << ((_____ << ____) + (_ << _))) + (((_______ <<
            __) - _) << (((((_ << ___) + _)) << ___) + (_ << _))) + (((_______
            << ___) + _) << ((_ << ______) + _)) + (((_______ << ____) - _) <<
            ((_______ << ___))) + (((_ << ____) - _) << ((((___ << __) + _) <<
            __) - _)) - (_______ << ((((___ << __) - _) << __) + _)) + (_______
            << (((((_ << ___) + _)) << __))) - ((((((_ << ___) + _)) << __) +
            _) << ((((___ << __) + _) << _))) + (((_______ << __) - _) <<
            (((((_ << ___) + _)) << _))) + (((___ << ___) + _) << ((_____ <<
            _))) + (_____ << ______) + (_ << ___)
        )
    )
)(
    *(lambda _, __, ___: _(_, __, ___))(
        (lambda _, __, ___:
            [__(___[(lambda: _).func_code.co_nlocals])] +
            _(_, __, ___[(lambda _: _).func_code.co_nlocals:]) if ___ else []
        ),
        lambda _: _.func_code.co_argcount,
        (
            lambda _: _,
            lambda _, __: _,
            lambda _, __, ___: _,
            lambda _, __, ___, ____: _,
            lambda _, __, ___, ____, _____: _,
            lambda _, __, ___, ____, _____, ______: _,
            lambda _, __, ___, ____, _____, ______, _______: _,
            lambda _, __, ___, ____, _____, ______, _______, ________: _
        )
    )
)

#

IIRC it was a Hello World or something like that...

#

And here's a nice thing I wrote once to calculate some probability...

#

>>> from functools import lru_cache
>>> f=lru_cache(maxsize=None)(lambda x:1 if x==0 else sum((1-f(i-1))/(2500-i) for i in range(x)))
>>> print(*("{:>4}: {:10.4%}".format(x, f(x)) for x in [1, 10, 100, 200, 500, 1000, 1500, 2000, 2500]), sep="\n")
   1:    0.0400%
  10:    0.3602%
 100:    3.9631%
 200:    7.9663%
 500:   19.9759%
1000:   39.9920%
1500:   60.0080%
2000:   80.0240%
2500:  100.0400%

#

Guess what? I accidentally rewrote an approximation for x/2500 😛

brisk zenith Jul 23, 2018, 10:44 PM

#

oh fancy :D

#

i love that top one

#

bytecode mods and what i'll now refer to as "lambdascores"

tropic gulch Jul 23, 2018, 10:45 PM

#

I think I copied that from codegolf.stackexchange.com or so

#

If I may interject for a moment, what you're referring to here as lambdascores are actually underscore lambdas, or as I've recently taken to calling it, underscores plus lambdas.

#

😉

brisk zenith Jul 23, 2018, 10:47 PM

#

haha good one

tropic gulch Jul 23, 2018, 10:48 PM

#

¯_(ツ)_/¯

novel vine Jul 23, 2018, 11:16 PM

#

AttributeError: 'function' object has no attribute 'func_code'

Process finished with exit code 1

#

@tropic gulch lambda machine broke

wind maple Jul 23, 2018, 11:18 PM

#

python2 code

#

replace func_code with __code__ and it should work

brisk zenith Jul 23, 2018, 11:21 PM

#

^

#

sorry, this *

wind maple Jul 23, 2018, 11:23 PM

#

Here's the blogpost by the author

#

https://benkurtovic.com/2014/06/01/obfuscating-hello-world.html

Obfuscating "Hello world!" – Ben Kurtovic

Fun with functional programming in Python | Ben Kurtovic's blog

#

It's pretty simple in reality

#

it just looks super confusing

brisk zenith Jul 23, 2018, 11:26 PM

#

yeah, i've done something like it before

#

i wonder if it's possible to fuck up python so badly that pointers are possible

novel vine Jul 23, 2018, 11:28 PM

#

AttributeError: module 'os' has no attribute 'wr_it'

#

weird must've missed something with find and replace worked now

tight hemlock Jul 24, 2018, 4:18 AM

#

I am very much enjoying this channel. Code folding was something I wasnt aware python did. Also compilation units are neat to think about

#

@novel vine C++ is AoT compiled so metaprogramming has the advantage of making cost-free abstractions at compile time and shipping expanded code to everyone else. Metaprogramming in Python wouldnt be useful because python is compiled and immediately run so metaprogramming has no advantage at all

#

everyone has to compile things anyway

novel vine Jul 24, 2018, 4:22 AM

#

yes but can it be done

tight hemlock Jul 24, 2018, 5:04 AM

#

metaprogramming? yes. anything significant compile time? not that i know of

#

well

#

idk how metaclasses are implemented

#

so you'll have to check that

brisk zenith Jul 24, 2018, 9:29 AM

#

i don't do this stuff because it's useful, it's just fun :D

broken agate Jul 24, 2018, 11:23 AM

#

what's the biggest golf ever performed 🤔

brisk zenith Jul 24, 2018, 11:25 AM

#

define 'biggest'

broken agate Jul 24, 2018, 11:28 AM

#

longest

fast torrent Jul 24, 2018, 11:32 AM

#

What is code golf?

brisk zenith Jul 24, 2018, 11:33 AM

#

writing your code to be compact

#

fewest bytes as possible

fast torrent Jul 24, 2018, 11:34 AM

#

So like a fizzbuzz code.

brisk zenith Jul 24, 2018, 11:34 AM

#

f=lambda n:all(n%q for q in range(2,n)) <- prime testing function

fast torrent Jul 24, 2018, 11:38 AM

#

@brisk zenith that makes primes? Cool!

#

Never understood lamdas use case....

brisk zenith Jul 24, 2018, 11:43 AM

#

it doesn't make primes, it tests if a number is prime

#

i.e f(7) would return True

fast torrent Jul 24, 2018, 11:47 AM

#

Ok

#

Makes sense

tight hemlock Jul 24, 2018, 12:47 PM

#

[*filter(lambda n:all(n%q for q in range(2,n)),range(x))]

#

this one makes primes^

brisk zenith Jul 24, 2018, 12:49 PM

#

not a function though :D

tight hemlock Jul 24, 2018, 12:50 PM

#

f = lambda x: [*filter(lambda n:all(n%q for q in range(2,n)),range(x))]

brisk zenith Jul 24, 2018, 12:52 PM

#

68 bytes

#

not bad

tight hemlock Jul 24, 2018, 12:54 PM

#

if you dont mind returning an iterator instead of a list (which is perfectly fine) its 65

brisk zenith Jul 24, 2018, 12:55 PM

#

def f(n):r=range(2,n);return{*r}-{b*x for b in r for x in r} was Someone's best (60)

tight hemlock Jul 24, 2018, 12:56 PM

#

oh i forgot lambdas actually longer isnt it

brisk zenith Jul 24, 2018, 12:56 PM

#

depends

#

on def you need a return

#

lambdas implicitly return

tight hemlock Jul 24, 2018, 12:56 PM

#

ah right fair enough

brisk zenith Jul 24, 2018, 12:56 PM

#

f=lambda n:[p for p in range(2,n)if all(p%q for q in range(2,p))] was my best (65)

tight hemlock Jul 24, 2018, 1:00 PM

#

wait

brisk zenith Jul 24, 2018, 1:01 PM

#

0 and 1 are not prime :(

tight hemlock Jul 24, 2018, 1:01 PM

#

dumb

#

petition to change 0 and 1 to primes

brisk zenith Jul 24, 2018, 1:02 PM

#

lmao

buoyant agate Jul 24, 2018, 1:02 PM

#

def f(x):return x
f=lambda x:x```

viral hedge Jul 24, 2018, 1:03 PM

#

f=lambda n:[2,3,5,7,11][n]``` Totally works for all primes, but don't test it past first 5 ![Kappa](https://cdn.discordapp.com/emojis/307260877730480128.webp?size=128 "Kappa")

brisk zenith Jul 24, 2018, 1:05 PM

#

lmao

buoyant agate Jul 24, 2018, 1:06 PM

#

I guess you have to use a function because of r=range(2,n)

brisk zenith Jul 24, 2018, 1:06 PM

#

yup

#

(lambdas are functions too >.>)

buoyant agate Jul 24, 2018, 1:07 PM

#

Yea, but you can't define variables in it

brisk zenith Jul 24, 2018, 1:07 PM

#

still a function, just only allows a single statement

#

i really really want a way to modify python's AST at compile-time, honestly

buoyant agate Jul 24, 2018, 1:08 PM

#

To do what?

brisk zenith Jul 24, 2018, 1:09 PM

#

to fuck with stuff :D

#

one idea is making
strjoin = λ *args: "".join(args) valid syntax for lambda functions

dense spire Jul 24, 2018, 2:44 PM

#

haha

brisk zenith Jul 24, 2018, 2:47 PM

#

hmmm

#

oooh i have an interesting idea

#

λ (num_one, num_two) <- num_one + num_two

# as an alternative to:

lambda num_one, num_two: num_one + num_two```i could make this work

north drum Jul 24, 2018, 2:50 PM

#

vague gust Jul 24, 2018, 2:50 PM

#

you just want the lambda symbol don't you

brisk zenith Jul 24, 2018, 2:50 PM

#

YES

#

lemme see what i can do

sick hound Jul 24, 2018, 3:02 PM

#

code = code.replace('λ', 'lambda')```

#

@brisk zenith

brisk zenith Jul 24, 2018, 3:03 PM

#

lmao, not quite

vague gust Jul 24, 2018, 3:04 PM

#

lambdef: 'lambda' [varargslist] ':' test
lambdef_nocond: 'lambda' [varargslist] ':' test_nocond

#

change these lines in Grammar/Grammar

sick hound Jul 24, 2018, 3:13 PM

#

@brisk zenith ```py
import inspect

def λ(func):
lines = inspect.getsource(func).replace('λ', 'lambda').splitlines()
code = lines[1] + '\n' + '\n'.join(lines[3:-1])
print(code)
exec(code)
return eval(func.name)

@λ
def test():
'''
return λ x: x + 1
'''```

brisk zenith Jul 24, 2018, 3:17 PM

#

ew

#

also @vague gust i know it's that easy, but i want to make a module out of it :D

vague gust Jul 24, 2018, 3:18 PM

#

k e k

brisk zenith Jul 24, 2018, 3:19 PM

#

but if there was a way to modify the AST before code is executed, that would be interesting too

calm rampart Jul 24, 2018, 3:50 PM

#

@brisk zenith make an import loader that reads the file, compiles to AST, calls your hook, then compiles the rest of the way

brisk zenith Jul 24, 2018, 3:51 PM

#

hmm

snow nebula Jul 24, 2018, 4:08 PM

#

you'd have to parse yourself, with your own rules and then translate your ast to the python ast

calm rampart Jul 24, 2018, 4:08 PM

#

well, not necessarily, if your input language is syntactically valid python

viral hedge Jul 24, 2018, 4:18 PM

#

myfile = open("somedoc.txt", "r")
fileiterator = myfile.__iter__()

while 1:
    savefile = open("savehere.txt", "a")
    try:
        value = fileiterator.__next__()
    except:
        print("oopsie / done")
        break
    else:
        if value:
            if not value[0] == "#":
                savefile.write(value)
    finally:
        savefile.close()
myfile.close()``` ![GWslippyPeepoL](https://cdn.discordapp.com/emojis/407618465508098049.webp?size=128 "GWslippyPeepoL")

wind maple Jul 24, 2018, 4:28 PM

#

This is a for loop

sick hound Jul 24, 2018, 6:52 PM

#

Does weird regex count

#

I have (?<=")/[^"j]+\d(?=")

#

more 'not python' than 'barely python' id say

last bramble Jul 24, 2018, 7:15 PM

#

there is a regex module in python

#

and it should be the go-to for any string parsing

tropic gulch Jul 24, 2018, 7:27 PM

#

That regex is far from being weird

sick hound Jul 24, 2018, 7:40 PM

#

^ that as well, it's straightforward enough -- weird regex would have lookarounds in the middle of it and backreferences and conditionals out the ears and maybe recursion and who knows what else

#

magikarp, regex still isn't python lol

fast torrent Jul 24, 2018, 7:46 PM

#

0 and 1 are perfect primes ecks dee

warm shell Jul 25, 2018, 3:51 AM

#

R ther code blocks on discord mobile

#

???

novel vine Jul 25, 2018, 3:52 AM

#

not on iOS probably on Android

sick hound Jul 25, 2018, 5:59 AM

#

I mean there are codeblocks, just no highlighting -- on both, I assume

novel vine Jul 25, 2018, 6:01 AM

#

ios quotes aren't supported to make codeblocks

#

‘’’ see ‘’’

tight hemlock Jul 25, 2018, 7:32 AM

#

You're not using the right symbol

#

You're trying to use smart quotations instead of backticks

novel vine Jul 25, 2018, 7:38 AM

#

test

#

Oh. So I was. Lol

brisk zenith Jul 25, 2018, 12:10 PM

#

TIL lambdas use the same cpython opcodes as literals

brisk zenith Jul 25, 2018, 12:26 PM

#

hey @sick hound you seem to know bytecode stuff, c'mere :P

sick hound Jul 25, 2018, 12:27 PM

#

Hi

brisk zenith Jul 25, 2018, 12:30 PM

#

λ (num_one, num_two) <- (-num_one + num_two) / 2 + -num_two

so i'm working on making this stuff actually valid code, and i know exactly how to do it except one thing. obviously i need to separate the bytecode that is the (-num_one + num_two) / 2 + -num_two section (the lambda content), but i can't seem to find a consistent way to identify which UNARY_NEGATIVE is referring to the one at <- the above line produces the following bytecode:

 82           0 LOAD_GLOBAL              0 (λ)
              2 LOAD_GLOBAL              1 (num_one)
              4 LOAD_GLOBAL              2 (num_two)
              6 CALL_FUNCTION            2
              8 LOAD_GLOBAL              1 (num_one)
             10 UNARY_NEGATIVE
             12 LOAD_GLOBAL              2 (num_two)
             14 BINARY_ADD
             16 UNARY_NEGATIVE                      <- in this case, it is here
             18 LOAD_CONST               1 (2)
             20 BINARY_TRUE_DIVIDE
             22 LOAD_GLOBAL              2 (num_two)
             24 UNARY_NEGATIVE
             26 BINARY_ADD
             28 COMPARE_OP               0 (<)
             30 STORE_FAST               0 (a)

though i just realised it would be way easier to force the programmer to put parentheses around the statement (so it would become λ (num_one, num_two) <- ((-num_one + num_two) / 2 + -num_two) in this case)

sick hound Jul 25, 2018, 12:32 PM

#

Uhh... That's not going to be easy

brisk zenith Jul 25, 2018, 12:32 PM

#

haha

#

go figure

#

i feel like forced paretheses is the best option

sick hound Jul 25, 2018, 12:33 PM

#

That probably is the best option

brisk zenith Jul 25, 2018, 12:34 PM

#

yeah okay, i'll see what i can do ^-^

#

right, got it planned out

sick hound Jul 25, 2018, 12:40 PM

#

With parenthesis it will be easy because the UNARY_NEGATIVE in the <- will be immediately before the COMPARE_OP

brisk zenith Jul 25, 2018, 12:41 PM

#

yup

#

so i'd just need to look for

UNARY_NEGATIVE
COMPARE_OP
POP_TOP```
*or* if it's assigned to a variable,

UNARY_NEGATIVE
COMPARE_OP
STORE_FAST```

#

easy enough ^-^

sick hound Jul 25, 2018, 12:42 PM

#

...What if you're passing it to a function

brisk zenith Jul 25, 2018, 12:42 PM

#

let's see

sick hound Jul 25, 2018, 12:43 PM

#

>>> dis.dis('foo(λ (num_one, num_two) <- ((-num_one + num_two) / 2 + -num_two))')
  1           0 LOAD_NAME                0 (foo)
              2 LOAD_NAME                1 (λ)
              4 LOAD_NAME                2 (num_one)
              6 LOAD_NAME                3 (num_two)
              8 CALL_FUNCTION            2
             10 LOAD_NAME                2 (num_one)
             12 UNARY_NEGATIVE
             14 LOAD_NAME                3 (num_two)
             16 BINARY_ADD
             18 LOAD_CONST               0 (2)
             20 BINARY_TRUE_DIVIDE
             22 LOAD_NAME                3 (num_two)
             24 UNARY_NEGATIVE
             26 BINARY_ADD
             28 UNARY_NEGATIVE
             30 COMPARE_OP               0 (<)
             32 CALL_FUNCTION            1 # not POP_TOP or STORE_FAST!
             34 RETURN_VALUE```

brisk zenith Jul 25, 2018, 12:43 PM

#

so then look for CALL_FUNCTION :P

#

it'll either end with POP_TOP, STORE_FAST or CALL_FUNCTION

#

so we can check for any of those

sick hound Jul 25, 2018, 12:47 PM

#

>>> dis.dis('foo(λ (num_one, num_two) <- (num_one if lol(num_one < -num_two) else num_two))')
  1           0 LOAD_NAME                0 (foo)
              2 LOAD_NAME                1 (λ)
              4 LOAD_NAME                2 (num_one)
              6 LOAD_NAME                3 (num_two)
              8 CALL_FUNCTION            2
             10 LOAD_NAME                4 (lol)
             12 LOAD_NAME                2 (num_one)
             14 LOAD_NAME                3 (num_two)
             16 UNARY_NEGATIVE
             18 COMPARE_OP               0 (<)
             20 CALL_FUNCTION            1 # Oh no
             22 POP_JUMP_IF_FALSE       28
             24 LOAD_NAME                2 (num_one)
             26 JUMP_FORWARD             2 (to 30)
        >>   28 LOAD_NAME                3 (num_two)
        >>   30 UNARY_NEGATIVE
             32 COMPARE_OP               0 (<)
             34 CALL_FUNCTION            1 # This is where the lambda actually ends
             36 RETURN_VALUE```

brisk zenith Jul 25, 2018, 12:48 PM

#

yeah, we'd still be looking for py UNARY_NEGATIVE COMPARE_OP CALL_FUNCTION

#

it seems like it'll always be py UNARY_NEGATIVE COMPARE_OP (POP_TOP | STORE_FAST | CALL_FUNCTION)

sick hound Jul 25, 2018, 12:49 PM

#

But what if there's a UNARY_NEGATIVE COMPARE_OP (POP_TOP | STORE_FAST | CALL_FUNCTION) in the lambda

brisk zenith Jul 25, 2018, 12:49 PM

#

hmm

#

you see, i was thinking we could look for the last occurrence on that line, but then py λ (num_one, num_two) <- ( num_one < -num_two )wouldn't be possible

#

any ideas to prevent that?

sick hound Jul 25, 2018, 12:56 PM

#

...Completely forget about doing this with Python code objects and use inspect.getsource and just do string substitution and then recompile the code instead? That's probably the easiest way

brisk zenith Jul 25, 2018, 12:56 PM

#

but that's boring :(

sick hound Jul 25, 2018, 1:01 PM

#

Find the LOAD_GLOBAL λ, then iterate through the instructions keeping track of how much the stack has changed since after the function call with the LOAD_GLOBAL λ

brisk zenith Jul 25, 2018, 1:01 PM

#

hmm

sick hound Jul 25, 2018, 1:01 PM

#

UNARY_NEGATIVE COMPARE_OP (POP_TOP | STORE_FAST | CALL_FUNCTION) is only the end of the function if the stack has changed by exactly 1

brisk zenith Jul 25, 2018, 1:02 PM

#

hmm

#

does that actually work though?

sick hound Jul 25, 2018, 1:02 PM

#

It should

brisk zenith Jul 25, 2018, 1:02 PM

#

it might be hard to keep track of the stack though

#

hmm

#

i have an idea

sick hound Jul 27, 2018, 8:03 PM

#

how in the hell

#

do i get a webhook in discord to work with monday.com

#

i am so frustrated over this issue

#

i keep on getting error code 400

fast torrent Jul 27, 2018, 8:17 PM

#

@sick hound what are you trying to do?

#

Can you show us your code and the error?

sick hound Jul 27, 2018, 8:20 PM

#

there is no code

#

its barely_python

#

im trying to get a webhook to work

#

but it keeps on spitting error code 400

brisk zenith Jul 27, 2018, 8:33 PM

#

that's better suited for an off-topic channel, because this channel is for things that are python but are almost not

red totem Jul 27, 2018, 10:37 PM

#

I have this weird problem. It's game-dev related. I have a gaming map serialisation format that goes as follow:

32 bytes of hash
deflated json with map data

The hash is a signature of the uncompressed json data to keep integrity.

Now I need to add some additional data into the map, by adding a header of some sort, but to keep it backwards-compatible. How do I do that without having a magic 32 bytes that tells deserialiser 'hey this is not a real hash, the header including actual hash follows'?

slim pecan Jul 27, 2018, 10:38 PM

#

This is a channel for, eg, code golf

#

It sounds like you want one of the help channels

#

unless you're not working in python at all

red totem Jul 27, 2018, 10:38 PM

#

those are python related, this one is bare algorithm problem

slim pecan Jul 27, 2018, 10:39 PM

#

Okay, but this still isn't a help channel

#

You'll have better luck in a help channel

red totem Jul 27, 2018, 10:39 PM

#

k, what this channel is for then?

slim pecan Jul 27, 2018, 10:39 PM

#

📎 unknown.png

red totem Jul 27, 2018, 10:40 PM

#

I've read this, I meant what besides solving problems can be discussed here?

slim pecan Jul 27, 2018, 10:40 PM

#

We put it way down here in the special section so it wasn't like, front and centre of our experience

#

Well, it's just a discussion channel, so everything related to that I guess

#

But since it's so specific and covers divisive topics, you won't find most of our users in here

#

that's why you want a help channel

red totem Jul 27, 2018, 10:41 PM

#

k

runic barn Jul 28, 2018, 1:34 AM

#

hey guys

#

can someone tell me how to transfer files to a vps in windows

#

like can i just plug in an external drive

sick hound Jul 28, 2018, 1:35 AM

#

wouldnt you just use winscp or filezilla or something

runic barn Jul 28, 2018, 1:35 AM

#

yeah but i would really just rather use hard drive

#

is there some way to just let it connect

#

i thought i did it a year ago

#

WAIT

#

is a remote desktop connection different than a VPS?? @sick hound

sick hound Jul 28, 2018, 1:39 AM

#

yeah kinda

runic barn Jul 28, 2018, 1:40 AM

#

ohhh i'm an idiot

#

thanks dude

#

you connect to the vps through rdc

#

and then i can transfer files through rdc right??

sick hound Jul 28, 2018, 1:40 AM

#

maybe

runic barn Jul 28, 2018, 1:40 AM

#

ohhh

#

i was using vps on a chrome tab

#

cause Vultr gave me that

#

you know what i mean

vague gust Jul 28, 2018, 1:48 AM

#

@runic barn Please add a nickname which complies with our nickname policy

#

Your current one includes noisy unicode characters, removing those symbols from the end of your nickname will do

runic barn Jul 28, 2018, 1:49 AM

#

okay

#

sorry

#

fixed

vague gust Jul 28, 2018, 1:49 AM

#

No problem, thank you!

brisk zenith Jul 28, 2018, 2:24 AM

#

it seems like people are mistaking "barely-python" to "not-python", and that's not a good

calm rampart Jul 28, 2018, 2:24 AM

#

how about #python-discussion-2-why-did-it-have-to-be-snakes

#

for the scary side of python 😛

brisk zenith Jul 28, 2018, 2:25 AM

#

haha

urban zenith Jul 28, 2018, 2:25 AM

#

It should be renamed #vscode-vs-pycharm

calm rampart Jul 28, 2018, 2:25 AM

#

the idea being that most anything you would discuss in here would be horrifying to find in a production program

novel vine Jul 28, 2018, 2:29 AM

#

why not just generic code-gore

brisk zenith Jul 28, 2018, 2:56 AM

#

because then stuff like Hy and ClojurePy wouldn't fit so much into it

#

perhaps python-gore though

#

(code-gore also suggests other language-gore is allowed)

runic barn Jul 28, 2018, 3:57 AM

#

hey @sick hound

#

so i set up a RDP

#

i'm transfering like 600 mb across to a vps

#

in japan

#

and estimated time is like over an hour

#

is that normal

unique shoal Jul 28, 2018, 3:58 AM

#

(take it to off topic y'all)

sick hound Jul 28, 2018, 3:59 AM

#

yeah you should ask that question in one of the offtopic channels maybe

#

but probably?

brisk zenith Jul 28, 2018, 4:14 AM

#

cough #community-meta

brisk zenith Jul 30, 2018, 3:07 AM

#

does anyone have any knowledge about the cpython implementation? haha i'm just pissing around

brisk zenith Jul 30, 2018, 3:44 AM

#

actually never mind i figured it out :D

#

>>> juan
<built-in function juan>
>>> print(juan.__doc__)
Return the base-juan representation of an integer.

   >>> juan(7)
   '0j1111111'
>>> juan(69)
'0j111111111111111111111111111111111111111111111111111111111111111111111'
>>>

brisk zenith Jul 30, 2018, 4:00 AM

#

>>> hex(12)
'0xc'
>>> bin(12)
'0b1100'
>>> juan(12)
'0j111111111111'
>>> juan(-3)
'-0j111'
>>>

#

my own builtin function :^)

#

only had to modify 3 files though

jade dust Jul 30, 2018, 4:19 AM

#

cool

#

Did you write it in C, or python?

sick hound Jul 30, 2018, 8:24 AM

#

If it's builtin then it's written in C

#

If it was in python then it would be <function juan at 0xsomewhere>, not <built-in function juan>

misty trellis Jul 30, 2018, 8:32 AM

#

This is cool

tropic gulch Jul 30, 2018, 10:19 AM

#

It's called base 1 though. Not base Juan, even if you named it like that 😛

wind maple Jul 30, 2018, 10:24 AM

#

Woosh

tropic gulch Jul 30, 2018, 10:37 AM

#

Btw, you can test whether a number in base 1 representation is a prime number using regular expressions...

brisk zenith Jul 30, 2018, 10:56 AM

#

although wouldn't it actually be 0s instead of 1s? that makes it so much easier, ill change it when i get home

#

uhh hey @vague gust look up i did a thing

cunning wave Jul 30, 2018, 11:20 AM

#

@brisk zenith I got a thing you can do, build built-in s for common encryptions using the Linux kernel level crypto API

brisk zenith Jul 30, 2018, 11:48 AM

#

hmm

#

id prefer to make a module out of it because built-in python features are supposed to be cross-platform

wind maple Jul 30, 2018, 12:06 PM

#

it can be any character it doesn't matter

#

Also I'd still do

#

0 1 11 111 1111

brisk zenith Jul 30, 2018, 12:15 PM

#

yeah, fair

#

because 0000 indicates that it's 0

sick hound Jul 30, 2018, 2:15 PM

#

how knows some good code golfing sites for python

sick hound Jul 30, 2018, 7:00 PM

#

def __repr__(self):
    return '<built-in function juan>'

@sick hound pypeek

brisk zenith Jul 30, 2018, 7:01 PM

#

haha

novel vine Jul 30, 2018, 7:01 PM

#

lul

sick hound Jul 30, 2018, 7:01 PM

#

Wait... oh

brisk zenith Jul 30, 2018, 7:01 PM

#

do you doubt my built-inness?

novel vine Jul 30, 2018, 7:01 PM

#

Yes

sick hound Jul 30, 2018, 7:02 PM

#

i believe it

jade dust Jul 30, 2018, 7:02 PM

#

source or it didn't happen

sick hound Jul 30, 2018, 7:02 PM

#

you need to start making PRs to get juan highlighted in the big editors though

novel vine Jul 30, 2018, 7:03 PM

#

PR to give bool a 3rd state

#

True False Juan

jade dust Jul 30, 2018, 7:05 PM

#

def __eq__(self, other):
    return random.choice([True, False])

brisk zenith Jul 30, 2018, 7:06 PM

#

https://github.com/kingdom5500/cpython/tree/messing-around/juan-builtin

GitHub

kingdom5500/cpython

cpython - The Python programming language

#

@jade dust

#

https://github.com/kingdom5500/cpython/commit/5d7ec5e1f72ad9ba88ed2b3a147a857da7cc1fc5

GitHub

juan builtin function · kingdom5500/cpython@5d7ec5e

#

diff here

jade dust Jul 30, 2018, 7:07 PM

#

haha I have no idea what it does

#

idk C.

#

It's cool that you were able to do that

sick hound Jul 30, 2018, 7:08 PM

#

Wow

brisk zenith Jul 30, 2018, 7:09 PM

#

idk C either, i just know a bit of C++ and became a neanderthal while i coded it

calm rampart Jul 30, 2018, 7:17 PM

#

negative = PyLong_AsSsize_t(a) < 0;``` - wait, these functions are limited to C integer range?

brisk zenith Jul 30, 2018, 7:17 PM

#

i changed that

#

cause the previous one didn't work with a bit size of 0

#

but i should probably change it back and make a special case

sick hound Jul 30, 2018, 7:18 PM

#

>>> bin(9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999)
'0b100101101001111010110111110001000111100001011001111001110100001110011111011001000100101011100101101001001011000110110011001001010110010111110110110110111010111001110111101110010001011011011000111010010101111111010101100000101011101010110111011101001001100011010101100011001101101101110010101100011000111110000101010101001111101011010011000011100101011000001111000010000000100011000111001111100111000101111010110000001011001000001111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111'```

brisk zenith Jul 30, 2018, 7:19 PM

#

interesting

calm rampart Jul 30, 2018, 7:19 PM

#

oh nevermind

#

it stores the sign bit with the length, apparently.

sick hound Jul 30, 2018, 10:30 PM

#

@tropic gulch btw say "one" and "juan" out loud together

tropic gulch Jul 30, 2018, 10:59 PM

#

GWpingSock

tropic gulch Jul 30, 2018, 11:26 PM

#

exit(1)

#

¯_(ツ)_/¯

#

0 is okay, everything else is bad.

#

which bad is up to the application

#

I don't think there are any "standard" codes common to many applications

snow nebula Jul 30, 2018, 11:30 PM

#

posix has some standardised exit codes

tropic gulch Jul 30, 2018, 11:30 PM

#

https://stackoverflow.com/a/1535733/4464570 hmmmm

Stack Overflow

Are there any standard exit status codes in Linux?

A process is considered to have completed correctly in Linux if its exit status was 0.

I've seen that segmentation faults often result in an exit status of 11, though I don't know if this is simpl...

#

but that applies only to Bash

#

other answers further down seem to confirm that there is no "global" standard meaning

viral hedge Jul 31, 2018, 5:59 PM

#

I kinda feel like half this talk belongs here, I'm scared. https://www.youtube.com/watch?v=E-1Y4kSsAFc

YouTube

Fear and Awaiting in Async: A Savage Journey to the Heart of the C...

David Beazley http://pyohio.org/schedule/

wind maple Jul 31, 2018, 6:03 PM

#

Good talk

#

Also none of this is barely-python

#

except maybe the async init metaclass

viral hedge Jul 31, 2018, 6:04 PM

#

Not even he frame hacking and that^?

wind maple Jul 31, 2018, 6:04 PM

#

I mean

#

Maybe when you see it for the first time?

viral hedge Jul 31, 2018, 6:04 PM

#

Guess I truly only know half of python then.

wind maple Jul 31, 2018, 6:04 PM

#

It's useful though

sick hound Aug 1, 2018, 4:34 PM

#

list(map(list, set(map(tuple, it))))

#

found this 🤔

brisk zenith Aug 1, 2018, 4:35 PM

#

oh dear

calm rampart Aug 1, 2018, 5:22 PM

#

[[*x] for x in {(*y,) for y in it}]

brisk zenith Aug 1, 2018, 5:31 PM

#

ouch :D

sick hound Aug 1, 2018, 6:11 PM

#

it ?

viral hedge Aug 1, 2018, 6:44 PM

#

Referring to what wright found

sick hound Aug 1, 2018, 6:47 PM

#

it = iterable probably

crisp pendant Aug 1, 2018, 7:30 PM

#

with open('settings.json') as f:
    vals = json.load(f)
settings = lambda: ...
settings.__dict__.update(**vals)

slim pecan Aug 1, 2018, 7:30 PM

#

oof, monkey-patching the Ellipsis singleton

#

wait no, the lambda

crisp pendant Aug 1, 2018, 7:31 PM

#

Since pass doesn't work xD

calm rampart Aug 1, 2018, 7:31 PM

#

just use None

sick hound Aug 1, 2018, 7:31 PM

#

pass is a statement

slim pecan Aug 1, 2018, 7:31 PM

#

surely you could just have used object() or type() :P

calm rampart Aug 1, 2018, 7:31 PM

#

lambda: None

#

that's the same as def f(): pass

crisp pendant Aug 1, 2018, 7:32 PM

#

That's true

#

I think object or type would have been the best, but then I couldn't post it here

calm rampart Aug 1, 2018, 7:32 PM

#

def settings(): pass

#

I think there's a pep 8 about never assigning a lambda to a variable

crisp pendant Aug 1, 2018, 7:33 PM

#

Oh really?

calm rampart Aug 1, 2018, 7:33 PM

#

because you should be using def instead

crisp pendant Aug 1, 2018, 7:33 PM

#

that's interesting

calm rampart Aug 1, 2018, 7:33 PM

#

yep "Always use a def statement instead of an assignment statement that binds a lambda expression directly to an identifier."

sick hound Aug 1, 2018, 7:33 PM

#

Always use a def statement instead of an assignment statement that binds a lambda expression directly to an identifier.

Yes:

def f(x): return 2*x
No:

f = lambda x: 2*x```

crisp pendant Aug 1, 2018, 7:33 PM

#

I just didn't want to use the [] because my fingers were tired

#

Good to know. I don't do it often, but I have done it.

#

I.E just now

arctic bridge Aug 2, 2018, 1:47 AM

#

Brother shared this gem with me... https://github.com/dylanbeattie/rockstar

GitHub

dylanbeattie/rockstar

rockstar - The Rockstar programming language specification

#


Midnight takes your heart and your soul
While your heart is as high as your soul
Put your heart without your soul into your heart

Give back your heart


Desire is a lovestruck ladykiller
My world is nothing 
Fire is ice
Hate is water
Until my world is Desire,
Build my world up
If Midnight taking my world, Fire is nothing and Midnight taking my world, Hate is nothing
Shout "FizzBuzz!"
Take it to the top

If Midnight taking my world, Fire is nothing
Shout "Fizz!"
Take it to the top

If Midnight taking my world, Hate is nothing
Say "Buzz!"
Take it to the top

Whisper my world

#

And there's a transpiler for Python: https://github.com/yanorestes/rockstar-py

GitHub

yanorestes/rockstar-py

rockstar-py - Python transpiler for the esoteric language Rockstar

plain pawn Aug 2, 2018, 12:15 PM

#

sweet, someone finally implemented it

crisp pendant Aug 2, 2018, 7:30 PM

#

from functools import reduce
dict1 = {1: (1, 2), 2: (3, 4, 5)}
dict2 = {2: (6, 7), 3: (8, 9)}

y = reduce(lambda x, y: {**x, **y},
    map(
      lambda k:{k:
        dict1.get((k), ()) + dict2.get((k), ())
      },
      {**dict1, **dict2}
      )
)

print(y)

Posting this here too because I wasted way too much time on this

sick hound Aug 2, 2018, 7:30 PM

#

What does that even do

wind maple Aug 2, 2018, 7:35 PM

#

merge the dictionaries

crisp pendant Aug 2, 2018, 7:35 PM

#

The values to be specific

wind maple Aug 2, 2018, 7:35 PM

#

non-destructive merge

crisp pendant Aug 2, 2018, 7:35 PM

#

Look in help channel 5

sick hound Aug 2, 2018, 7:36 PM

#

y = dict((k, dict1.get(k, ()) + dict2.get(k, ())) for k in {**dict1, **dict2})```

wind maple Aug 2, 2018, 7:37 PM

#

That's a destructive merge

#

isn't it

sick hound Aug 2, 2018, 7:37 PM

#

no

#

it's the same thing

wind maple Aug 2, 2018, 7:37 PM

#

oh I

#

smh dict1.keys() | dict2.keys()

crisp pendant Aug 2, 2018, 7:38 PM

#

y = {key: dict1.get(key, ()) + dict2.get(key, ()) for key in {**dict1, **dict2}}

#

I did that earlier in the chat

#

I just wanted to see how over the top I could make it while staying on one line and not being redundant

sick hound Aug 2, 2018, 7:48 PM

#

(lambda types:types.FunctionType(types.CodeType(0, 0, 0, 3, 64, b'd\x00d\x01\x84\x00e\x00j\x01\x83\x00e\x02j\x01\x83\x00B\x00D\x00\x83\x01S\x00', (types.CodeType(1, 0, 2, 6, 67, b'i\x00|\x00]\x1e}\x01t\x00j\x01|\x01f\x00\x83\x02t\x02j\x01|\x01f\x00\x83\x02\x17\x00|\x01\x93\x02q\x04S\x00', (), ('dict1', 'get', 'dict2'), ('.0', 'k'), '', '', 1, b'\x06\x00'), ''), ('dict1', 'keys', 'dict2'), (), '', '', 1, b''),{**globals(),**locals()})())(__import__('types'))```

#

@crisp pendant

crisp pendant Aug 2, 2018, 7:49 PM

#

rediculous

novel vine Aug 2, 2018, 7:56 PM

#

That’s beautiful

#

@brisk zenith quality code honestly

brisk zenith Aug 2, 2018, 7:58 PM

#

ooh lemme decode this

#

yes i understand it

#

interesting code right there pastebean

brisk zenith Aug 3, 2018, 3:50 AM

#

    moves = [
        (
            lambda x_offset, y_offset: (
                lambda x, y: (x + x_offset, y + y_offset)
            )
        ).__call__(x_offset, y_offset)
        for x_offset in (-1, 0, 1)
        for y_offset in (-1, 0, 1)
        if (x_offset or y_offset)
    ]

fun :D

#

this generates a list of lambdas which can each be called to return a unique point around a given (x, y) coordinate

#

giving (10, 10) to each of these lambdas will return:

(9, 9)
(9, 11)
(10, 9)
(10, 10)
(10, 11)
(11, 9)
(11, 11)

#

except (10, 10) shouldn't be there

#

hmm

#

edited, now it gives the expected result: py (9, 9) (9, 10) (9, 11) (10, 9) (10, 11) (11, 9) (11, 10) (11, 11)

whole kiln Aug 3, 2018, 4:29 AM

#

I'm thinking of another term for clearing a bit i.e. setting it to 0. Can anyone remind me? All I remember is that it was a bit unintuitive of a word because outside of programming, it had a different but related meaning

calm rampart Aug 3, 2018, 4:33 AM

#

@whole kiln I've sometimes seen "reset" used for it

whole kiln Aug 3, 2018, 4:35 AM

#

Thanks, but I'm sure that's not what I was thinking of

#

going to try to look in the assembly book I read it in

#

god knows which chapter its in

#

I was thinking of assert

#

and it means the opposite

#

setting the value to one

sick hound Aug 3, 2018, 4:43 AM

#

what means the opposite?

whole kiln Aug 3, 2018, 4:44 AM

#

Initially I thought the word I was thinking of meant to set something to 0

#

But I found that I was thinking of 'assert', and it means setting something to 1

sick hound Aug 3, 2018, 4:45 AM

#

ah i see, but i can't say I've heard that meaning of assert myself

whole kiln Aug 3, 2018, 4:45 AM

#

Yeah, I was confused at first too

#

From the book:

#

As a rule, computers read memory much more slowly than they access internal registers. This is
because reading a single value from memory involves four separate steps:
1. Place the address of the value you want to read on the address bus.
2. Assert (change the value of) the processor’s RD
 (read)
 pin.
3. Wait one clock cycle for the memory chips to respond.
4. Copy the data from the data bus into the destination operand.```

sick hound Aug 3, 2018, 4:46 AM

#

oh i see, interesting

whole kiln Aug 3, 2018, 4:46 AM

#

When I think of assert, I think of test cases

#

the definition doesn't line up with that

#

Cause for test cases it's a check rather than changing any value

sick hound Aug 3, 2018, 4:53 AM

#

yeah when i was trying z80 asm (for my calculators lol) i remember the terms "set" and "reset" being used, nothing else

#

oh no but we've fallen into the "not python" trap

sick hound Aug 3, 2018, 5:28 AM

#

base one is so epic

brisk zenith Aug 3, 2018, 10:03 AM

#

def likes(names):
    return {
        len(names) == 0: "no one likes this",
        len(names) == 1: "%s likes this",
        len(names) == 2: "%s and %s like this",
        len(names) >= 3: "%s, %s and %s like this"
    }[True] % tuple(
        names if len(names) <= 3
        else names[:2] + ["%d others" % (len(names) - 2)]
    )

codewars? more like codegores :^)
(i was forced to use 2.7 for this, that's the real code gore haha)

whole kiln Aug 3, 2018, 10:04 AM

#

what in gods name

brisk zenith Aug 3, 2018, 10:04 AM

#

welcome to #esoteric-python, where code goes to die.

whole kiln Aug 3, 2018, 10:08 AM

#

fortunately/unfortunately I don't think I have any OC code gore 😦

#

maybe if I consider my tendency to write one-liners when I was starting out

#

yeah... py return list(map(lambda m: Exchange.Market( m["MarketName"], Exchange.Currency( m["MarketCurrency"], m["MarketCurrencyLong"], None), Exchange.Currency( m["BaseCurrency"], m["BaseCurrencyLong"], None), None), markets))

brisk zenith Aug 3, 2018, 10:11 AM

#

:D

whole kiln Aug 3, 2018, 10:12 AM

#

I have a worse one py return next((Exchange.Currency(symbol, name, precision) for symbol, name, precision in g.db.cursor.fetchall() if re.search((name if g.config["search_currency_name"] else "") + r"\s*?[(\[{]+?\s*?" + symbol + r"\s*?[)\]}]", text, re.IGNORECASE)), None)

#

that's it from me

brisk zenith Aug 3, 2018, 10:13 AM

#

ooh regex gore :^)

viral hedge Aug 3, 2018, 10:14 AM

#

The only code gore I can give from my early days is code indented 8-10 times

#

:(

whole kiln Aug 3, 2018, 10:14 AM

#

is that regex gore?

#

if you look at the regex alone

#

yeah i guess it's pretty gorey

dense spire Aug 3, 2018, 11:20 AM

#

let's face it, all regex is gore

slim pecan Aug 3, 2018, 11:28 AM

#

How about RFC 822?

dense spire Aug 3, 2018, 11:29 AM

#

is that the email one

slim pecan Aug 3, 2018, 11:29 AM

#

yeah

#

📎 unknown.png

#

too big for discord

dense spire Aug 3, 2018, 11:29 AM

#

yeah looks great, I would take it on a dinner date we could have sex

#

jk it makes me want to kill people.

slim pecan Aug 3, 2018, 11:30 AM

#

comment from SO:

The regular expression to validate email addresses (possibly multiple in to:, cc: and bcc: form) (from RFC 822) is pretty beefy; definitely the longest non-trivial regular expression that I have seen. Unfortunately, it seems that there are a lot of sites out there on the internet that do not use this regular expression or an equivalent validation as I have encountered far too many sites that do not accept myemailaddress+yourstupidsite@gmail.com as a valid email address.

dense spire Aug 3, 2018, 11:31 AM

#

a fair point

#

that should totally be supported

calm rampart Aug 3, 2018, 4:01 PM

#

the regex to validate a single proper email address is much shorter

#

people latched onto the fact that the grammar element that one validates is called "address" whereas the one normal people think of as an email address is called "addr-spec"

#

just like the HTML tag regex parsing thing, people jumped to do "I don't feel like you should be using a regex for this, so I'll just make up whatever reason why it's 'impossible' without regard to accuracy"

brisk zenith Aug 3, 2018, 4:04 PM

#

i use regex for parsing html when i'm too lazy to set up a venv/pipenv lmao

calm rampart Aug 3, 2018, 4:04 PM

#

regex for an addr-spec is only a few hundred characters long.

#

(addr-spec in RFC 822/5322, mailbox in RFC 821/5321)

coral plank Aug 3, 2018, 4:20 PM

#

anyone know how to get a mongo.py to appear in a terminal window from a tmux

tmux new -s mongod -d "/bin/bash"
tmux new -s mongo -d "/bin/bash"
tmux new -s gui -d "/bin/bash"
tmux new -s controller -d "/bin/bash"
#tmux new -s plot -d "/bin/bash"
#tmux new -s plot2 -d "/bin/bash"
tmux run-shell -t "mongod" "mongod"&
tmux run-shell -t "mongo" "python /home/pi/Desktop/EmbeddedFlaskServer/mongo.py"&
#tmux attach -t mongo
sleep 2

#tmux run-shell -t "plot" "python /home/pi/Desktop/EmbeddedFlaskServer/plotPID.py"&
#tmux run-shell -t "plot2" "python /home/pi/Desktop/EmbeddedFlaskServer/plotPID2.py"&
tmux run-shell -t "controller" "python /home/pi/Desktop/EmbeddedFlaskServer/controller.py"&
tmux run-shell -t "gui" "python /home/pi/Desktop/EmbeddedFlaskServer/gui.py"
tmux run-shell -t "gui" "python /home/pi/Desktop/EmbeddedFlaskServer/stop.py"
pkill -f controller.py
pkill -f mongo.py
mongod --shutdown
tmux kill-server```
mongo runs but doesnt appear when you attach to the mongo window
and doesnt show in jobs or bg

sick hound Aug 3, 2018, 4:49 PM

#

ask in a help channel, @coral plank

#

or in one of the general-programming servers actually

coral plank Aug 3, 2018, 4:49 PM

#

was told its not directly python related

sick hound Aug 3, 2018, 4:50 PM

#

this channel's for sharing bad python

#

as above

coral plank Aug 3, 2018, 4:50 PM

#

oh lol

#

which channel should i ask or maybe a server recommendation but the programming discord is useless

viral hedge Aug 3, 2018, 4:51 PM

#

Probably off topic channels?

crisp pendant Aug 3, 2018, 9:44 PM

#

print(f"That's {input('How are you?: ')}" if not print(f'Hello, {input("What is your name?: ")}') else "")

#

from https://www.reddit.com/r/ProgrammerHumor/comments/9486e0/after_one_python_lecture_i_have_created/?utm_content=comments&utm_medium=user&utm_source=reddit&utm_name=u_Zer0897

r/ProgrammerHumor - After one python lecture I have created hyperr...

12,475 votes and 346 comments so far on Reddit

jade dust Aug 4, 2018, 4:03 AM

#

Has anyone seen http://onelinepy.herokuapp.com/ ?

#

Change any python code into one line by abusing lambdas

brisk zenith Aug 4, 2018, 4:23 AM

#

ooh yeah i saw that once, really interesting. i don't think it can handle async yet though

blazing basin Aug 4, 2018, 2:34 PM

#

writing those single-line python apps manually is a lot of fun

#

it's like writing functionally

brave bison Aug 4, 2018, 2:56 PM

#

(lambda __g: [None for __g['f'], f.name in [(lambda x: (lambda __l: [(__l['x'] * 4) for __l['x'] in [(x)]][0])({}), 'f')]][0])(globals())

strange flame Aug 4, 2018, 11:33 PM

#

hi

#

i have a question a bit unrelated to python

#

if someone could answer me please

novel vine Aug 4, 2018, 11:35 PM

#

In one of the ot channels. #ot0-psvm’s-eternal-disapproval #ot1-perplexing-regexing or #ot2-never-nester’s-nightmare

misty trellis Aug 5, 2018, 3:31 PM

#

I just use
\w@\w.\w

#

Is that that bad

tropic gulch Aug 5, 2018, 10:26 PM

#

it doesn't cover - at least, so yeah, it will fail on many common addresses. also . is any character in regex, unless escaped

calm rampart Aug 5, 2018, 10:31 PM

#

i wrote a program to generate the proper regex for validating an email addr-spec

#

atext = '[-0-9A-Z!#-\'*+/=?^-~]' # Lowercase included in ^-~
atom = atext + '+'
dot_atom = atom + '(?:\\.' + atom + ')*'
# RFC 822 allowed quoted-strings in place of atoms
qtext = '[] !#-[^-~]'
qpair = '\\\\[ -~]'
qcontent = '(?:' + qtext + '|' + qpair + ')'
quoted_string = '"' + qcontent + '*"'
# RFC 5321 and 5322 differ on the semantics of whitespace within quoted-strings
let_dig = '[0-9A-Za-z]'
ldh_str = '[-0-9A-Za-z]*' + let_dig
subdomain = let_dig + '(?:' + ldh_str + ')?'
dot_domain = subdomain + '(?:\.' + subdomain + ')*'
# dot_domain = dot_atom in RFC 5322
dtext = '[]!#-[^-~]'
domain_literal = '\\[[^' + dtext + '*\\]'
# RFC 5321 requires valid IP address here
local_part = '(' + dot_atom + '|' + quoted_string + ')'
domain = '(' + dot_domain + '|' + domain_literal + ')'
addr_spec = local_part + '@' + domain

# (
#  [-0-9A-Z!#-'*+/=?^-~]+(?:\.[-0-9A-Z!#-'*+/=?^-~]+)*
# |
#  "(?:[] !#-[^-~]|\\[ -~])*"
# )@(
#  [0-9A-Za-z](?:[-0-9A-Za-z]*[0-9A-Za-z])?(?:\.[0-9A-Za-z](?:[-0-9A-Za-z]*[0-9A-Za-z])?)*
# |
#  \[[^[]!#-[^-~]*\]
# )
# Total 188 characters```

whole kiln Aug 6, 2018, 10:19 PM

#

some regex gore/porn

#

private static readonly Regex _Regex = new Regex(
            @"(?:{field}(?<fname>.*?)\{\}(?<fvalue>.*?)(?:\{\}(?<finline>.*?))?(?=$|{(?:field|author name|author icon|author url|thumbnail|title|url|color|description|image|footer text|footer icon|submit)}))|{(?<action>author name|author icon|author url|thumbnail|title|url|color|description|image|footer text|footer icon|submit)}(?<value>.*?)(?=$|{(?:field|author name|author icon|author url|thumbnail|title|url|color|description|image|footer text|footer icon|submit)})",
RegexOptions.Compiled | RegexOptions.CultureInvariant | RegexOptions.IgnoreCase);```

brisk zenith Aug 6, 2018, 10:21 PM

#

not even python 👀 :D

buoyant agate Aug 6, 2018, 10:22 PM

#

Is that for an embed?

whole kiln Aug 6, 2018, 10:22 PM

#

yeah

#

was originally implemented with pretty ugly code

#

i did my best at the time to improve it

misty trellis Aug 7, 2018, 7:45 AM

#

It's so barely python it's not even written in python

whole kiln Aug 7, 2018, 8:09 AM

#

just remove the top and bottom and no one will know the difference 😉

sick hound Aug 7, 2018, 5:32 PM

#

@brave bison py os = __builtins__.__getattribute__('__import__').__call__('os') i = ("this is even more descriptive",).__getattribute__('__iter__').__call__() s = '' while True: try: s = s.__getattribute__('__add__').__call__(i.__getattribute__('__next__').__call__().__getattribute__('__str__').__call__()) s = s.__getattribute__('__add__').__call__(' ') except __builtins__.__getattribute__('StopIteration'): break s += '\n' os.__getattribute__('write').__call__(1, s.encode())

brave bison Aug 7, 2018, 5:32 PM

#

thats not what i wrote

sick hound Aug 7, 2018, 5:32 PM

#

i know

#

it's what I wrote

brave bison Aug 7, 2018, 5:33 PM

#

mine was 1 line

sick hound Aug 7, 2018, 5:33 PM

#

that code is not yours

#

that code is mine

#

and I wrote it

#

you did not write it

#

you are not me

brave bison Aug 7, 2018, 5:33 PM

#

ill make it more barely python

#

(lambda __operator, __g, __contextlib, __y: [[[(lambda __after: __y(lambda __this: lambda: (lambda __break: (lambda __out: (lambda __ctx: [__ctx.__enter__(), __ctx.__exit__(None, None, None), __out[0](lambda: __this())][2])(__contextlib.nested(type('except', (), {'__enter__': lambda self: None, '__exit__': lambda __self, __exctype, __value, __traceback: __exctype is not None and (issubclass(__exctype, __builtins__.__getattribute__('StopIteration')) and [True for __out[0] in [(__break())]][0])})(), type('try', (), {'__enter__': lambda self: None, '__exit__': lambda __self, __exctype, __value, __traceback: [False for __out[0] in [([[(lambda __after: __after()) for __g['s'] in [(s.__getattribute__('__add__').__call__(' '))]][0] for __g['s'] in [(s.__getattribute__('__add__').__call__(i.__getattribute__('__next__').__call__().__getattribute__('__str__').__call__()))]][0])]][0]})())))([None]))(__after) if True else __after())())(lambda: [(os.__getattribute__('write').__call__(1, s.encode()), None)[1] for __g['s'] in [(__operator.iadd(__g['s'], '\n'))]][0]) for __g['s'] in [('')]][0] for __g['i'] in [(('this is even more descriptive',).__getattribute__('__iter__').__call__())]][0] for __g['os'] in [(__builtins__.__getattribute__('__import__').__call__('os'))]][0])(__import__('operator', level=0), globals(), __import__('contextlib', level=0), (lambda f: (lambda x: x(x))(lambda y: f(lambda: y(y)()))))

#

its a one liner now

sick hound Aug 7, 2018, 5:34 PM

#

how did you do that?

brave bison Aug 7, 2018, 5:34 PM

#

with this one liner that converts a script into a 1 liner

#

oh too big for discord

#

https://pastebin.com/ZfJDykjx

Pastebin

(lambda __builtin__: (lambda __print, __y, __d: [[[[[[[[[[(lambda ...

#

this is the true power of python

sick hound Aug 7, 2018, 5:48 PM

#

(lambda f:f(f))(lambda y:lambda f:lambda:f(y(y)(f)))(lambda f:lambda n:f()(n-1)*n if n else 1)()```

#

This is factorial

charred steeple Aug 7, 2018, 7:33 PM

#

I think this counts as barely python https://github.com/kragniz/anyprint

GitHub

kragniz/anyprint

anyprint - Use any* language's print statements in Python

viral hedge Aug 7, 2018, 7:35 PM

#

i like the testimonials

charred steeple Aug 7, 2018, 7:36 PM

#

probably the only good bit

tropic gulch Aug 7, 2018, 9:47 PM

#

o_O

#

it supports cout << "Hello, C++!" << endl;

cunning wave Aug 7, 2018, 9:47 PM

#

juan supports that too

tropic gulch Aug 7, 2018, 9:48 PM

#

@brisk zenith someone was faster than you 👆

cunning wave Aug 7, 2018, 9:48 PM

#

oof

whole kiln Aug 7, 2018, 11:20 PM

#

but does it support it with std:: ?

sick hound Aug 8, 2018, 1:08 PM

#

Nope, there's actually an open issue asking for that

#

I don't see how it'd work bc syntax error

brisk zenith Aug 8, 2018, 4:44 PM

#

yup

whole kiln Aug 8, 2018, 10:54 PM

#

rip my hopes and dreams

sick hound Aug 9, 2018, 10:12 AM

#

well

#

technically you could do stdːː

#

which is a cheaty ː

next linden Aug 9, 2018, 8:10 PM

#

thought i should ask a question here about the julia language

#

anybody know if it's worth learning or worth my time

#

apparently it's easy like python but fast like C

#

https://julialang.org/

sick hound Aug 9, 2018, 8:33 PM

#

this channel is for sharing bad python code

wind maple Aug 9, 2018, 8:36 PM

#

I guess yes

whole kiln Aug 9, 2018, 8:52 PM

#

it's not limited to that

unique shoal Aug 9, 2018, 9:50 PM

#

it's definitely not about Julia

#