pandas.errors.NullFrequencyError
- exceptionpandas.errors.NullFrequencyError[source]
-
Exception raised when a
freqcannot be null.Particularly
DatetimeIndex.shift,TimedeltaIndex.shift,PeriodIndex.shift.
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https://pandas.pydata.org/pandas-docs/version/1.5.0/reference/api/pandas.errors.NullFrequencyError.html