pandas.util.hash_array¶
- pandas.util.hash_array(vals, encoding='utf8', hash_key='0123456789123456', categorize=True)[source]¶
Given a 1d array, return an array of deterministic integers.
- Parameters
- valsndarray, Categorical
- encodingstr, default ‘utf8’
Encoding for data & key when strings.
- hash_keystr, default _default_hash_key
Hash_key for string key to encode.
- categorizebool, default True
Whether to first categorize object arrays before hashing. This is more efficient when the array contains duplicate values.
- Returns
- 1d uint64 numpy array of hash values, same length as the vals