Method __setitem__

lib/sqlalchemy/ext/mutable.py:809–812

Detect dictionary set events and emit change events.

(self, key: _KT, value: _VT)

    """

    def __setitem__(self, key: _KT, value: _VT) -> None:
        """Detect dictionary set events and emit change events."""
        dict.__setitem__(self, key, value)
        self.changed()

    if TYPE_CHECKING:
        # from https://github.com/python/mypy/issues/14858