Function assert_never

pydantic/v1/utils.py:740–747

Helper to make sure that we have covered all possible types. This is mostly useful for ``mypy``, docs: https://mypy.readthedocs.io/en/latest/literal_types.html#exhaustive-checks

(obj: NoReturn, msg: str)

def assert_never(obj: NoReturn, msg: str) -> NoReturn:
    """
    Helper to make sure that we have covered all possible types.

    This is mostly useful for ``mypy``, docs:
    https://mypy.readthedocs.io/en/latest/literal_types.html#exhaustive-checks
    """
    raise TypeError(msg)


def get_unique_discriminator_alias(all_aliases: Collection[str], discriminator_key: str) -> str: