dask_expr._collection.DataFrame.categorize
dask_expr._collection.DataFrame.categorize¶
- DataFrame.categorize(columns=None, index=None, split_every=None, **kwargs)[source]¶
Convert columns of the DataFrame to category dtype.
Warning
This method eagerly computes the categories of the chosen columns.
- Parameters
- columnslist, optional
A list of column names to convert to categoricals. By default any column with an object dtype is converted to a categorical, and any unknown categoricals are made known.
- indexbool, optional
Whether to categorize the index. By default, object indices are converted to categorical, and unknown categorical indices are made known. Set True to always categorize the index, False to never.
- split_everyint, optional
Group partitions into groups of this size while performing a tree-reduction. If set to False, no tree-reduction will be used.
- kwargs
Keyword arguments are passed on to compute.