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pandas.Series.to_period

Series.to_period(self, freq=None, copy=True) [source]

Convert Series from DatetimeIndex to PeriodIndex with desired frequency (inferred from index if not passed).

Parameters:
freq : str, default None

Frequency associated with the PeriodIndex.

copy : bool, default True

Whether or not to return a copy.

Returns:
Series

Series with index converted to PeriodIndex.

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Licensed under the 3-clause BSD License.
https://pandas.pydata.org/pandas-docs/version/0.25.0/reference/api/pandas.Series.to_period.html