def await_result(obj, timeout=None):
    """
    Return the result of a `Future` object.

    :param obj:
        Value object.
    :type obj: concurrent.futures.Future | object

    :param timeout:
        The number of seconds to wait for the result if the future isn't done.
        If None, then there is no limit on the wait time.
    :type timeout: int

    :return:
        Result.
    :rtype: object

    Example::

        >>> from concurrent.futures import Future
        >>> fut = Future()
        >>> fut.set_result(3)
        >>> await_result(fut), await_result(4)
        (3, 4)
    """
    from concurrent.futures import Future
    return obj.result(timeout) if isinstance(obj, Future) else obj