Function automap_base

lib/sqlalchemy/ext/automap.py:1422–1458

r"""Produce a declarative automap base. This function produces a new base class that is a product of the :class:`.AutomapBase` class as well a declarative base produced by :func:`.declarative.declarative_base`. All parameters other than ``declarative_base`` are keyword arguments

(
    declarative_base: Optional[Type[Any]] = None, **kw: Any
)

def automap_base(
    declarative_base: Optional[Type[Any]] = None, **kw: Any
) -> Any:
    r"""Produce a declarative automap base.

    This function produces a new base class that is a product of the
    :class:`.AutomapBase` class as well a declarative base produced by
    :func:`.declarative.declarative_base`.

    All parameters other than ``declarative_base`` are keyword arguments
    that are passed directly to the :func:`.declarative.declarative_base`
    function.

    :param declarative_base: an existing class produced by
     :func:`.declarative.declarative_base`.  When this is passed, the function
     no longer invokes :func:`.declarative.declarative_base` itself, and all
     other keyword arguments are ignored.

    :param \**kw: keyword arguments are passed along to
     :func:`.declarative.declarative_base`.

    """
    if declarative_base is None:
        Base = _declarative_base(**kw)
    else:
        Base = declarative_base

    return type(
        Base.__name__,
        (AutomapBase, Base),
        {
            "__abstract__": True,
            "classes": util.Properties({}),
            "by_module": util.Properties({}),
            "_sa_automapbase_bookkeeping": _Bookkeeping(set()),
        },
    )


def _is_many_to_many(