pandas.Series.sparse.fill_value
- Series.sparse. fill_value
-
Elements in data that are fill_value are not stored.
For memory savings, this should be the most common value in the array.
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Licensed under the 3-clause BSD License.
https://pandas.pydata.org/pandas-docs/version/1.4.0/reference/api/pandas.Series.sparse.fill_value.html
