pandas.DatetimeIndex.freqstr#

property DatetimeIndex.freqstr[source]#

Return the frequency object as a string if it’s set, otherwise None.

See also

DatetimeIndex.inferred_freq: Returns a string representing a frequency generated by infer_freq.

Examples

For DatetimeIndex:

>>> idx = pd.DatetimeIndex(["1/1/2020 10:00:00+00:00"], freq="D")
>>> idx.freqstr
'D'

The frequency can be inferred if there are more than 2 points:

>>> idx = pd.DatetimeIndex(
...     ["2018-01-01", "2018-01-03", "2018-01-05"], freq="infer"
... )
>>> idx.freqstr
'2D'

For PeriodIndex:

>>> idx = pd.PeriodIndex(["2023-1", "2023-2", "2023-3"], freq="M")
>>> idx.freqstr
'M'