def identity(value, *_, **__):
    """
    Trivial identity function: return the value passed in its first argument.

    Examples:

    >>> identity(42)
    42

    >>> list(
    ...     filter(
    ...         identity,
    ...         [None, False, True, 0, 1, list(), set(), dict()],
    ...     ),
    ... )
    [True, 1]
    """

    return value