pandas.infer_freq — pandas 2.2.3 documentation (original) (raw)

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• pandas.infer_freq

pandas.infer_freq(index)[source]#

Infer the most likely frequency given the input index.

Parameters:

indexDatetimeIndex, TimedeltaIndex, Series or array-like

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

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'

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• infer_freq()