polars.datatypes.Categorical#
- class polars.datatypes.Categorical(ordering: CategoricalOrdering | None = 'physical')[source]#
A categorical encoding of a set of strings.
- Parameters:
- ordering{‘lexical’, ‘physical’}
Ordering by order of appearance (
'physical'
, default) or string value ('lexical'
).
Methods
__init__
([ordering])base_type
()Return this DataType's fundamental/root type class.
from_python
(py_type)Return the Polars data type corresponding to a given Python type.
is_
(other)Check if this DataType is the same as another DataType.
is_decimal
()Check whether the data type is a decimal type.
is_float
()Check whether the data type is a floating point type.
is_integer
()Check whether the data type is an integer type.
is_nested
()Check whether the data type is a nested type.
is_numeric
()Check whether the data type is a numeric type.
is_signed_integer
()Check whether the data type is a signed integer type.
is_temporal
()Check whether the data type is a temporal type.
is_unsigned_integer
()Check whether the data type is an unsigned integer type.
to_python
()Return the Python type corresponding to this Polars data type.
Attributes
ordering