Incorrect signature for pandas.Series.str.rsplit

[kroche98]

Describe the bug
The stubs for pandas_stubs.core.strings.StringMethods.rsplit includes a regex: bool parameter. The function pandas.Series.str.rsplit contains no such parameter.

To Reproduce

ser = pd.Series(["foo.bar.baz", "qux.foobar"])
ser.str.rsplit(".", regex=False)

I'm using pyright, which does not raise any error, even though it should since actually running the code results in TypeError: StringMethods.rsplit() got an unexpected keyword argument 'regex'.
Please complete the following information:

• OS: MacOS
• OS Version: Sonoma 14.6.1
• Python 3.12.1
• pyright 1.1.389
• pandas-stubs 2.2.3.241009

Additional context
The confusion seems to stem from the fact that the parallel method pandas.Series.str.split does include a regex: bool parameter.

[loicdiridollou]

Thanks for the report, indeed it seems like deleting the regex argument should fix the issue:

pandas-stubs/pandas-stubs/core/strings.pyi

Lines 76 to 78 in df1cd38

	def rsplit(
	self, pat: str = ..., *, n: int = ..., expand: bool = ..., regex: bool = ...
	) -> T: ...