xorbits.pandas.Series.last_valid_index

Series.last_valid_index() → Hashable | None

Return index for last non-NA value or None, if no non-NA value is found.

Return type

type of index

Notes

If all elements are non-NA/null, returns None. Also returns None for empty Series/DataFrame.

Examples

For Series:

>>> s = pd.Series([None, 3, 4])  
>>> s.first_valid_index()  
1
>>> s.last_valid_index()  
2

For DataFrame:

>>> df = pd.DataFrame({'A': [None, None, 2], 'B': [None, 3, 4]})  
>>> df  
     A      B
0  NaN    NaN
1  NaN    3.0
2  2.0    4.0
>>> df.first_valid_index()  
1
>>> df.last_valid_index()  
2

Warning

This method has not been implemented yet. Xorbits will try to execute it with pandas.

This docstring was copied from pandas.core.series.Series.