* Setting the __module__ attribute for a class now removes the
__firstlineno__ item from the type's dict.
* The _collections_abc and _pydecimal modules now completely replace the
collections.abc and decimal modules after importing them. This
allows to get the source of classes and functions defined in these
modules.
* inspect.findsource() now checks whether the first line number for a
class is out of bound.
(cherry picked from commit 69a4063ca5)
gh-122981: Fix inspect.getsource() for generated classes with Python base classes (GH-123001)
Look up __firstlineno__ only in the class' dict, without searching in
base classes.
(cherry picked from commit f88c14d412)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Serhiy Storchaka