New submission from Decorater:
On the C API, it tells how to make modules, functions, variables, and other
things, but what about classes?
Like for example if you wanted to make a class with all of the methods having
to use direct C Code which would then be converted to PyObject *'s for
returning the information the C Code would normally return.
Not only that but also being able to create class instance variables using the
C API as well.
Like for example here is an example class (As it would be if it was written in
python):
class Example:
def __init__(self):
self.data = None # None being a place holder for now.
def somefunction(self):
# C Code here.
self.data = ret # return value for the C Code.
return self.data
Yes, there are better ways than writing the return data to the instance
variable and returning it. That is just an example, I have classes that uses
them for other things that does not return anything making the instance
variables be the only way to get the data.
But yeah long story short I think creating classes with the C API should be
documented if not already, or at least an example of doing one to be added as
an guide for others wondering how to use the C API to make their own (non
exception) classes.
----------
assignee: docs@python
components: Documentation, Extension Modules
messages: 293863
nosy: Decorater, docs@python
priority: normal
severity: normal
status: open
title: Document how to make classes in the C API.
versions: Python 3.5, Python 3.6, Python 3.7
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Python tracker <[email protected]>
<http://bugs.python.org/issue30390>
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