pandas.infer_freq¶
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pandas.infer_freq(index, warn=True)[source]¶ Infer the most likely frequency given the input index. If the frequency is uncertain, a warning will be printed.
Parameters: index : DatetimeIndex or TimedeltaIndex
if passed a Series will use the values of the series (NOT THE INDEX)
- warn : boolean, default True
Returns: freq : string or None
None if no discernible frequency TypeError if the index is not datetime-like ValueError if there are less than three values.