pandas.SparseArray.sp_index

SparseArray.sp_index: Индекс SparseIndex, содержащий расположение не- fill_value точек.

© 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/0.24.2/reference/api/pandas.SparseArray.sp_index.html