pandas.PeriodIndex.to_timestamp#

PeriodIndex.to_timestamp(freq=None, how='start')[source] #

Cast to DatetimeArray/Index.

Parameters:
freqstr or DateOffset, optional

Target frequency. The default is ‘D’ for week or longer, ‘s’ otherwise.

how{‘s’, ‘e’, ‘start’, ‘end’}

Whether to use the start or end of the time period being converted.

Returns:
DatetimeArray/Index

Timestamp representation of given Period-like object.

See also

PeriodIndex.day

The days of the period.

PeriodIndex.from_fields

Construct a PeriodIndex from fields (year, month, day, etc.).

PeriodIndex.from_ordinals

Construct a PeriodIndex from ordinals.

PeriodIndex.hour

The hour of the period.

PeriodIndex.minute

The minute of the period.

PeriodIndex.month

The month as January=1, December=12.

PeriodIndex.second

The second of the period.

PeriodIndex.year

The year of the period.

Examples

>>> idx = pd.PeriodIndex(["2023-01", "2023-02", "2023-03"], freq="M")
>>> idx.to_timestamp()
DatetimeIndex(['2023年01月01日', '2023年02月01日', '2023年03月01日'],
dtype='datetime64[ns]', freq='MS')

The frequency will not be inferred if the index contains less than three elements, or if the values of index are not strictly monotonic:

>>> idx = pd.PeriodIndex(["2023-01", "2023-02"], freq="M")
>>> idx.to_timestamp()
DatetimeIndex(['2023年01月01日', '2023年02月01日'], dtype='datetime64[ns]', freq=None)

>>> idx = pd.PeriodIndex(
...  ["2023-01", "2023-02", "2023-02", "2023-03"], freq="2M"
... )
>>> idx.to_timestamp()
DatetimeIndex(['2023年01月01日', '2023年02月01日', '2023年02月01日', '2023年03月01日'],
dtype='datetime64[ns]', freq=None)

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