pandas.util.hash_array

pandas.util.hash_array(vals, encoding='utf8', hash_key=None, categorize=True) [source]

Given a 1d array, return an array of deterministic integers.

New in version 0.19.2.

Parameters:	vals : ndarray, Categorical encoding : string, default ‘utf8’ encoding for data & key when strings hash_key : string key to encode, default to _default_hash_key categorize : bool, default True Whether to first categorize object arrays before hashing. This is more efficient when the array contains duplicate values. New in version 0.20.0.
Returns:	1d uint64 numpy array of hash values, same length as the vals