• I have checked that this issue has not already been reported.

• I have confirmed this bug exists on the latest version of pandas.

• (optional) I have confirmed this bug exists on the master branch of pandas.

import pandas as pd

s = pd.Series([1,2,3], name="foo")

reveal_type(s.name)

nam: str = s.name

mypy then reports:

seriesnam.py:5: note: Revealed type is "typing.Hashable*"
seriesnam.py:7: error: Incompatible types in assignment (expression has type "Hashable", variable has type "str")  [assignment]

It's natural to assume that the names of a Series are str

So why do we have it typed as Hashable ?

Seems like @simonjayhawkins changed this in #39107