sktime_datetime_freq

Helpers for sktime ForecastingHorizon when series indices have no pandas freq.

infer_pandas_freq_offset_for_datetime_index(index)

Return a pandas offset so sktime ForecastingHorizon can call to_absolute.

NIFTY / stocks-style covariate series often use a DatetimeIndex with no .freq and no pd.infer_freq result (irregular gaps). sktime then leaves fh.freq as None and predict raises int * NoneType in _to_offset.

Parameter	Type	Default	Description
index	pd.DatetimeIndex	-	(undocumented)

Returns: A pandas offset object. Raises: * TypeError: If index is not pd.DatetimeIndex. * ValueError: If the index is empty, or if frequency cannot be inferred (e.g., index length < 2 when no freq is present, or median timestamp delta is NaT).