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builtins.object Generic builtins.object builtins.dict KeyFuncDict
class KeyFuncDict(builtins.dict, Generic):
Base for ORM mapped dictionary classes.
Extends the ``dict`` type with additional methods needed by SQLAlchemy ORM
collection classes. Use of :class:`_orm.KeyFuncDict` is most directly
by using the :func:`.attribute_keyed_dict` or
:func:`.column_keyed_dict` class factories.
:class:`_orm.KeyFuncDict` may also serve as the base for user-defined
custom dictionary classes.
.. versionchanged:: 2.0 Renamed :class:`.MappedCollection` to
:class:`.KeyFuncDict`.
.. seealso::
:func:`_orm.attribute_keyed_dict`
:func:`_orm.column_keyed_dict`
:ref:`orm_dictionary_collection`
:ref:`orm_custom_collection`
| Signature du constructeur | Description |
|---|---|
| __init__(self, keyfunc: 'Callable[[Any], Any]', *dict_args: 'Any', ignore_unpopulated_attribute: 'bool' = False) -> 'None' | Create a new collection with keying provided by keyfunc. [extrait de __init__.__doc__] |
| Signature de la méthode | Description |
|---|---|
| __class_getitem__(object) | See PEP 585 [extrait de __class_getitem__.__doc__] |
| __reduce__(self) -> 'Tuple[Callable[[_KT, _KT], KeyFuncDict[_KT, _KT]], Tuple[Any, Union[Dict[_KT, _KT], Dict[_KT, _KT]], CollectionAdapter]]' | |
| fromkeys(iterable, value=None) | Create a new dictionary with keys from iterable and values set to value. [extrait de fromkeys.__doc__] |
| remove(self, value: '_KT', _sa_initiator: 'Union[AttributeEventToken, Literal[None, False]]' = None) -> 'None' | Remove an item by value, consulting the keyfunc for the key. [extrait de remove.__doc__] |
| set(self, value: '_KT', _sa_initiator: 'Union[AttributeEventToken, Literal[None, False]]' = None) -> 'None' | Add an item by value, consulting the keyfunc for the key. [extrait de set.__doc__] |
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