exception pandas.errors.UnsortedIndexError [source]
Error raised when attempting to get a slice of a MultiIndex, and the index has not been lexsorted. Subclass of KeyError.
New in version 0.20.0.
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Licensed under the 3-clause BSD License.
https://pandas.pydata.org/pandas-docs/version/0.25.0/reference/api/pandas.errors.UnsortedIndexError.html