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DOC: clarify default behavior for categories ordering #22081

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Aug 1, 2018
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DOC: clarify default behavior for categories ordering #22081

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DOC: clarify default behavior for categories ordering
toobaz Jul 27, 2018
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DOC: backticks
toobaz Jul 30, 2018
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8 changes: 6 additions & 2 deletions pandas/core/arrays/categorical.py
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Expand Up @@ -241,10 +241,14 @@ class Categorical(ExtensionArray, PandasObject):
categories will be replaced with NaN.
categories : Index-like (unique), optional
The unique categories for this categorical. If not given, the
categories are assumed to be the unique values of values.
categories are assumed to be the unique values of `values` (sorted, if
possible, otherwise in the order in which they appear).
ordered : boolean, (default False)
Whether or not this categorical is treated as a ordered categorical.
If not given, the resulting categorical will not be ordered.
If True, the resulting categorical will be ordered.
An ordered categorical respects, when sorted, the order of its
`categories` attribute (which in turn is the `categories` argument, if
provided).
dtype : CategoricalDtype
An instance of ``CategoricalDtype`` to use for this categorical

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