pandas.factorize¶
- pandas.factorize(values, sort=False, order=None, na_sentinel=-1, size_hint=None)¶
Encode input values as an enumerated type or categorical variable
Parameters: values : ndarray (1-d)
Sequence
sort : boolean, default False
Sort by values
order : deprecated
na_sentinel : int, default -1
Value to mark “not found”
size_hint : hint to the hashtable sizer
Returns: labels : the indexer to the original array
uniques : ndarray (1-d) or Index
the unique values. Index is returned when passed values is Index or Series
note: an array of Periods will ignore sort as it returns an always sorted PeriodIndex