Improve the repr of partialmethod

[serhiy-storchaka]

Bug report

The repr of partialmethod object contains redundant commas and spaces. Compare it with the repr of partial:

>>> import functools
>>> def test(*args, **kwargs): pass
... 
>>> functools.partial(test)
functools.partial(<function test at 0x7fcbe91819d0>)
>>> functools.partial(test, a=1)
functools.partial(<function test at 0x7fcbe91819d0>, a=1)
>>> functools.partialmethod(test)
functools.partialmethod(<function test at 0x7fcbe91819d0>, , )
>>> functools.partialmethod(test, a=1)
functools.partialmethod(<function test at 0x7fcbe91819d0>, , a=1)

cc @dg-pb @rhettinger

Linked PRs

• gh-121025: improve partialmethod.__repr__ #121033
• [3.13] gh-121025: Improve partialmethod.__repr__ (GH-121033) #121037
• [3.12] gh-121025: Improve partialmethod.__repr__ (GH-121033) #121038

[picnixz]

I'll take this one if possible!