patito.Model.nullable_columns

property Model.nullable_columns: set[str]

Return names of those columns that are nullable in the schema.

Return type

set[str]

Returns

Set of column name strings.

Example

>>> from typing import Optional
>>> import patito as pt
>>> class MyModel(pt.Model):
...     nullable_field: Optional[int]
...     inferred_nullable_field: int = None
...     non_nullable_field: int
...     another_non_nullable_field: str
...
>>> sorted(MyModel.nullable_columns)
['inferred_nullable_field', 'nullable_field']