pandas.infer_freq

pandas.infer_freq(index, warn=True)

Infer the most likely frequency given the input index. If the frequency is uncertain, a warning will be printed.

Parameters

indexDatetimeIndex or TimedeltaIndex

If passed a Series will use the values of the series (NOT THE INDEX).

warnbool, default True

Returns

str or None

None if no discernible frequency.

Raises

TypeError

If the index is not datetime-like.

ValueError

If there are fewer than three values.

Examples

>>> idx = pd.date_range(start='2020/12/01', end='2020/12/30', periods=30)
>>> pd.infer_freq(idx)
'D'

pandas.timedelta_range pandas.interval_range