pandas.DataFrame.first_valid_index
-
DataFrame.first_valid_index()[source] -
Return index for first non-NA/null value.
Returns: scalar : type of index Notes
If all elements are non-NA/null, returns None. Also returns None for empty DataFrame.
© 2008–2012, AQR Capital Management, LLC, Lambda Foundry, Inc. and PyData Development Team
Licensed under the 3-clause BSD License.
https://pandas.pydata.org/pandas-docs/version/0.22.0/generated/pandas.DataFrame.first_valid_index.html