__doc__ | string literal specified in source code | Code Analyzer library
kandi X-RAY | __doc__ Summary
kandi X-RAY | __doc__ Summary
Docstring is a string literal specified in source code that is used, like a comment, to document a specific segment of code. A docstring occurs as the first statement in a module, function, class, or method definition. Languages that support docstrings include Python, Lisp, Elixir, and Clojure. For more info see the following links: * [PEP-0257] (* [Docstring] (* [Literate programming] (
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QUESTION
I'm trying to understand slots. Therefore, I have written a little script with two classes, one using slots and one not.
...ANSWER
Answered 2022-Apr-09 at 18:03Since you don't override __dir__
here, in each case here it will resolve in the MRO to type.__dir__(A)
or type.__dir__(C)
. So we look at the default implementation of __dir__
for types, here in Objects/typeobject.c
QUESTION
I try to make png from decision tree that i made before from a data. Using package pydotplus, I want to save the png in my local storage and show it. It work in google colab, but it error in jupyter. It said
GraphViz's executables not found
This is my code
...ANSWER
Answered 2022-Mar-14 at 14:20Hello Try these answers in the link, Maybe this is helpful. Or you can try importing OpenCV or PIL or matplotlib and write the variable as a png file. Install OpenCV library before doing this. You can do it by
QUESTION
I would usually initialize a class this way,
...ANSWER
Answered 2022-Mar-08 at 05:28it appears that as soon as I specify type
as the base class, my class becomes a class creator.
so, instances of a class with type
as the base class, will be classes.
that is,
QUESTION
I have a model A
and want to make subclasses of it.
ANSWER
Answered 2022-Mar-04 at 17:01With a little help from Django-expert friends, I solved this with the post_migrate
signal.
I removed the update_or_create
in __init_subclass
, and in project/app/apps.py
I added:
QUESTION
im writing a migration to update the data, i used get_model() like the docs describe to get the model class like so:
...ANSWER
Answered 2021-Oct-29 at 07:11I have encountered similar problems during custom migrations. I think one of the reasons is the class returned by get_model
is sometimes not the full-fledged model class you would get from importing it properly. The get_model
call, however, is necessary to make sure the model is properly loaded for the time of the migration. That is because at migration time, the model is supposed to represent the model in its state after the previous migration. I fthe manager was defined at a later time, it will not be there yetOne workaround that works for us:
QUESTION
Im trying to dig into the Rich inpsect further to understand how it is doing the following.
If I look at an object (result
) like so. I can see that it has the following attributes and methods.
ANSWER
Answered 2022-Feb-13 at 21:14The nice thing about open-source code is that you can just go find the source and read it. For this question, you'll be interested in this file in the rich
source code. You're mostly interested in the _render
method, though some things are set up in __init__
.
We can break down the output you were seeing, to properly understand it:
QUESTION
I need to run numpy in an embedded system that has an ARM SoC, so I cross-compiled Python 3.8.10 and Numpy using arm-linux-gnueabihf-gcc. Then I copied both executables and libraries to the embedded system. But when I try to import numpy I get the following error:
...ANSWER
Answered 2022-Jan-30 at 13:03I found the problem, it was a Python compilation issue. I used the following commands to compile Python and the problem was solved.
QUESTION
Is it possible to have a Python docstring calculated? I have a lot of repetitive things in my docstrings, so I'd like to either use f-strings or a %-style format expression.
When I use an f-string at the place of a docstring
- importing the module invokes the processing
- but when I check the
__doc__
of such a function it is empty - sphinx barfs when the docstring is an f-string
I do know how to process the docstrings after the import, but that doesn't work for object 'doc' strings which is recognized by sphinx but is not a real __doc__
's of the object.
ANSWER
Answered 2022-Jan-27 at 20:52Docstrings in Python must be regular string literals.
This is pretty easy to test - the following program does not show the docstring:
QUESTION
So I have come across a very interesting behavior of python name mangling. Consider the following code
...ANSWER
Answered 2022-Jan-25 at 13:41__
-prefixed names work fine as-is inside the class's own methods. It's only outside the class (including in its subclasses) that the modified name is needed to access the attribute, due to name-mangling.
QUESTION
I try to test swig library 'std_vector.i', but I can't create a vector in Python3 like official demo, Here is some information.
swig_test.i
...ANSWER
Answered 2022-Jan-22 at 19:25The problem here is how you're importing and using the module you've built.
When you ran SWIG as well as generating some C++ code it also generated some Python too. Rather than directly access the native module you want to access it via the generated python instead, e.g.
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