pandas.errors.NullFrequencyError
- exception pandas.errors. NullFrequencyError [source]
-
Error raised when a null freq attribute is used in an operation that needs a non-null frequency, particularly DatetimeIndex.shift, TimedeltaIndex.shift, PeriodIndex.shift.
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Licensed under the 3-clause BSD License.
https://pandas.pydata.org/pandas-docs/version/1.4.0/reference/api/pandas.errors.NullFrequencyError.html
