Attached patch simplifies the _bisect module: remove _bisect.bisect and _bisect.insort aliases. Aliases are created in Lib/bisect.py.

I wrote the patch to prepare the C code for Argument Clinic, see issue #28754.

Note: Lib/test/test_bisect.py already contains two unit tests:

    def test_backcompatibility(self):
        self.assertEqual(self.module.bisect, self.module.bisect_right)

    def test_backcompatibility(self):
        self.assertEqual(self.module.insort, self.module.insort_right)

LGTM

Oh, bisect() was renamed to bisect_right() and insort() renamed to insort_right() in the changeset 67b3ac439f64 of Python 2.1. The aliases created for "backward compatibility" are for compatibility with... Python 2.0 :-)

The aliases were never deprecated. Maybe we can also remove/rephrase the "backward compatibility" comment.

New changeset 45713818fd81 by Victor Stinner in branch 'default':
Issue #28792: Remove aliases from _bisect
https://hg.python.org/cpython/rev/45713818fd81

I pushed quickly my patch, so Julien can rebase his patch on top of that. I like his patch because it changes bisect to use FASTCALL which makes bisect faster!