pandas.PeriodDtype.na_value
-
PeriodDtype.na_value -
float(x) -> floating point number
Convert a string or number to a floating point number, if possible.
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Licensed under the 3-clause BSD License.
https://pandas.pydata.org/pandas-docs/version/0.24.2/reference/api/pandas.PeriodDtype.na_value.html