Python allows programmers to pass additional arguments to functions via comments. Now armed with this knowledge head out and spread it to all code bases.
Feel free to use the code I wrote in your projects.
Link to the source code: https://github.com/raldone01/python_lessons_py/blob/v2.0.0/lesson_0_comments.ipynb
Image transcription:
# First we have to import comment_arguments from arglib
# Sadly arglib is not yet a standard library.
from arglib import comment_arguments
def add(*args, **kwargs):
c_args, c_kwargs = comment_arguments()
return sum([int(i) for i in args + c_args])
# Go ahead and change the comments.
# See how they are used as arguments.
result = add() # 1, 2
print(result)
# comment arguments can be combined with normal function arguments
result = add(1, 2) # 3, 4
print(result)
Output:
3
10
This is version v2.0.0 of the post: https://github.com/raldone01/python_lessons_py/tree/v2.0.0
Note:
v1.0.0 of the post can be found here: https://github.com/raldone01/python_lessons_py/tree/v1.0.0
Choosing lib as the name for my module was a bit devious.
I did it because I thought if I am creating something cursed why not go all the way?
Regarding misinformation:
I thought simply posting this in programmer humor was enough. Anyways, the techniques shown here are not yet regarded best practice. Decide carefully if you want to apply the shown concepts in your own code bases.
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I assume the people freaking out about how dumb python is didn’t bother to read the code and have never coded in python in their life, because the behavior here is totally reasonable. Python doesn’t parse comments normally, which is what you’d expect, but if you tell it to read the raw source code and then parse the raw source code for the comments specifically, of course it does.
You would never, ever accidentally do this.
…you’d also never, ever do it on purpose.
yeah frankly this post is borderline misinformation, they specifically import a library to read comments as arguments, it’s like redefining keywords in C and complaining about C being dumb
I’m going to say it just is misinformation, if that’s what “lib” is here.
Yeah. ‘lib’ isn’t a standard Python library, it’s the name of the abomination that this person created. Since python has quite a bit of useful introspection, they can do something like:
- get the stack
- find the exact call to
abomination.add() - reparse the text of that line, turn the text of the comment into actual numbers, and add them
Now, I don’t know if python keeps the comments around, so it may involve getting the filename and line number, reading the file, and manually extracting the comment text from that line.
It’s not even actually called lib. The line just straight up isn’t in the image “transcribed”, and it’s
from arglib import comment_argumentsin the original code.Yeah, I gave this one a downvote.
I updated the source after this post was made. The image transcription still holds. I did not update the image and the post text.
You can view the git history. I will tag the specific commit at the time of the post later and update it accordingly.
Ah, and you’re the author. That kind of changes the whole context here.
It doesn’t mean much, but have your upvote back.
TMI 😢
Implementation of the
add()function is here: https://github.com/raldone01/python_lessons_py/blob/main/lib.pyYup, the function actually goes and finds the code that calls it and parses the comment.
Disgusting.
It is now directly in the notebook in the latest version: https://github.com/raldone01/python_lessons_py/blob/v2.0.0/lesson_0_comments.ipynb
Makes sence if u think about it. We use comments as docstrings that the interpreter has an understanding of. Python lets u fuck with its internals (at least in an immutable manner) so why not fuck with comments.
This is some javascript level shit
It’s actually kind of nice to see this as a JS developer.
Not like, “Oh wow this is neat!”
But like, “Finally the golden child, Python, also has some fucked up shit”
we need a programming horror community for stuff like this
What? There is no
libmodule.$ python3.13 -c 'import lib' Traceback (most recent call last): File "<string>", line 1, in <module> import lib ModuleNotFoundError: No module named 'lib' $OP wrote this add() function and has provided their own lib module in the source code.
Oh, so it’s not Python that’s cursed.
One of Python’s design philosophies is—or at least was—“we are all consenting adults here.” If you really want to turn Python into Brainfuck, the interpreter isn’t going to stop you.
I have updated the repository. Just clone it.
The lib module was written by me. Actual implementation code is here: https://github.com/raldone01/python_lessons_py/blob/v2.0.0/arglib.py
This is an affront to nature. Comments shouldn’t even make it past the scanner.
That’s disgusting
I hate this shit being routinely used in PHP. Symfony uses those functional comments for routing, essentially scanning every controller file as text on every visit, to gather the url patterns above functions. Laravel uses Reflection, which is functionally the same thing, to provide arguments to controller functions. Also, kind of related, the project I’m working now has few functions that use backtrace to return different results based on where they are called from. It is indeed very cursed and I’m ripping out any usages of them whenever I see one.
Comment Annotations were a nessecary thing as php did not support a native way to do it. However, since php 8, there is now native attributes.
bro what we are devolving
The best language is complete, succinct, orderly and clear. And never adds a single goddamn thing ever.
They chose violence.
I fucking hate this, thanks OP
How do I delete this part of the python documentation?
Thank you, I hate it
