patito.Model.valid_dtypes
- property Model.valid_dtypes: dict[str, List[Type[polars.datatypes.DataType]]]
Return a list of polars dtypes which Patito considers valid for each field.
The first item of each list is the default dtype chosen by Patito.
- Return type
dict
[str
,List
[Type
[DataType
]]]- Returns
A dictionary mapping each column string name to a list of valid dtypes.
- Raises
NotImplementedError – If one or more model fields are annotated with types not compatible with polars.
Example
>>> from pprint import pprint >>> import patito as pt
>>> class MyModel(pt.Model): ... bool_column: bool ... str_column: str ... int_column: int ... float_column: float ... >>> pprint(MyModel.valid_dtypes) {'bool_column': [<class 'polars.datatypes.Boolean'>], 'float_column': [<class 'polars.datatypes.Float64'>, <class 'polars.datatypes.Float32'>], 'int_column': [<class 'polars.datatypes.Int64'>, <class 'polars.datatypes.Int32'>, <class 'polars.datatypes.Int16'>, <class 'polars.datatypes.Int8'>, <class 'polars.datatypes.UInt64'>, <class 'polars.datatypes.UInt32'>, <class 'polars.datatypes.UInt16'>, <class 'polars.datatypes.UInt8'>], 'str_column': [<class 'polars.datatypes.Utf8'>]}