pandas 1.4.2

NotesParametersReturns
argsort(self, ascending=True, kind='quicksort', **kwargs)
versionchanged

Changed to sort missing values at the end.

Notes

While an ordering is applied to the category values, arg-sorting in this context refers more to organizing and grouping together based on matching category values. Thus, this function can be called on an unordered Categorical instance unlike the functions 'Categorical.min' and 'Categorical.max'.

Parameters

ascending : bool, default True

Whether the indices should result in an ascending or descending sort.

kind : {'quicksort', 'mergesort', 'heapsort', 'stable'}, optional

Sorting algorithm.

**kwargs: :

passed through to numpy.argsort .

Returns

np.ndarray[np.intp]

Return the indices that would sort the Categorical.

See Also

numpy.ndarray.argsort

Examples

This example is valid syntax, but we were not able to check execution
>>> pd.Categorical(['b', 'b', 'a', 'c']).argsort()
array([2, 0, 1, 3])
This example is valid syntax, but we were not able to check execution
>>> cat = pd.Categorical(['b', 'b', 'a', 'c'],
...  categories=['c', 'b', 'a'],
...  ordered=True)
... cat.argsort() array([3, 0, 1, 2])

Missing values are placed at the end

This example is valid syntax, but we were not able to check execution
>>> cat = pd.Categorical([2, None, 1])
... cat.argsort() array([2, 0, 1])
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File: /pandas/core/arrays/categorical.py#1713
type: <class 'function'>
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