T.loc[] does not return a T-like type

[OrangeDog]

I'm using IDEA/PyCharm for type checking, but from looking at the stubs this does seem to be an omission there.

I would expect "slicing" a Series or DataFrame to return something with all the same methods as a Series or DataFrame, but the types do not appear to be that.

pd.Series(range(4)).loc[2:].sum()

The above, for example, correctly evaluates to 5, but generates the warning:

Unresolved attribute reference 'sum' for class '_LocIndexerSeries'

[Dr-Irv]

We only support pyright and mypy. There is no issue with those type checkers on that code.

From what I understand, the PyCharm type checker has multiple issues. There is a pyright plugin for PyCharm, and you might want to switch to that.

Closing since we don't support the PyCharm type checker.