mypy error when passing np.datetime64 or np.timedelta64 to pd.isna

[nph]

Describe the bug
pd.isna does not support np.datetime64 and np.timedelta64 input types.

To Reproduce

from __future__ import annotations

import datetime as dt
from typing import TypeVar

import numpy as np
import pandas as pd

TV_TD = TypeVar('TV_TD', dt.datetime, np.datetime64, dt.timedelta, np.timedelta64)

def test_isna(value: TV_TD) -> bool:
    return pd.isna(value)

mypy output:

 error: No overload variant of "isna" matches argument type "datetime64"  [call-overload]
 note: Possible overload variants:
 note:     def isna(obj: DataFrame) -> DataFrame
 note:     def isna(obj: Series[Any]) -> Series[bool]
 note:     def isna(obj: Union[Index, List[Any], Union[ExtensionArray, ndarray[Any, Any]]]) -> ndarray[Any, dtype[bool_]]
 note:     def isna(obj: Union[Union[Union[str, bytes, date, datetime, timedelta, bool, int, float, Timestamp, Timedelta], complex], NaTType, NAType, None]) -> TypeGuard[Union[NaTType, NAType, None]]
 error: No overload variant of "isna" matches argument type "timedelta64"  [call-overload]
Found 2 errors in 1 file (checked 1 source file)

Please complete the following information:

• OS: MacOS
• OS 12.6.3
• python: 3.8.0
• mypy: 1.0.1
• version of installed pandas-stubs: 1.5.3.230214

Additional context
The problem seems to be that the IndexIterScalar TypeAlias does not include np.datetime64 and np.timedelta64. The test_isna test case is also missing tests for np.datetime64 and np.timedelta64 input. PR with a fix here

[Dr-Irv]

The problem seems to be that the IndexIterScalar TypeAlias does not include np.datetime64 and np.timedelta64. The test_isna test case is also missing tests for np.datetime64 and np.timedelta64 input. I'll submit a PR with a fix.

Yes, that is correct. Hopefully just adding those 2 types to IndexIterScalar will do the trick and not break anything else. Make sure to include tests.