bpo-34966: Improve support of method aliases in pydoc. (GH-9823)


Pydoc now does not duplicate docstrings for aliases of inherited methods.
(cherry picked from commit a44d34e17908a49d584f86c4f8642a50707b7150)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
3 files changed