pandas.DataFrame.first_valid_index
- DataFrame.first_valid_index()[source]
-
Return index for first non-NA value or None, if no NA value is found.
- Returns
-
- scalar:type of index
Notes
If all elements are non-NA/null, returns None. Also returns None for empty Series/DataFrame.
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Licensed under the 3-clause BSD License.
https://pandas.pydata.org/pandas-docs/version/1.3.4/reference/api/pandas.DataFrame.first_valid_index.html