strip error

[toywei]

Bug report

Bug description:

Python 3.13.3 (tags/v3.13.3:6280bb5, Apr  8 2025, 14:47:33) [MSC v.1943 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> 'bytedance_advertiser'.rstrip('_advertiser')
'bytedanc'
>>> 'bytedance_advertiser'.rstrip('advertiser')
'bytedance_'
>>> 'tecent_advertiser'.rstrip('advertiser')
'tecent_'
>>> 'tecent_advertiser'.rstrip('_advertiser')
'tecen'
>>>

CPython versions tested on:

3.13

Operating systems tested on:

Windows

[skirpichev]

Please see documentation:

Return a copy of the string with trailing characters removed. The chars argument is a string specifying the set of characters to be removed.
[...]
See str.removesuffix() for a method that will remove a single suffix string rather than all of a set of characters.