pandas.DatetimeIndex.freqstr

property DatetimeIndex.freqstr

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

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'