classify.py 文件源码

def is_discrete(space):
    """ Checks if a space is discrete. A space is considered to
        be discrete if it is derived from Discrete, MultiDiscrete
        or MultiBinary.
        A Tuple space is discrete if it contains only discrete 
        subspaces.
        :raises TypeError: If the space is no `gym.Space`.
    """
    assert_space(space)

    if isinstance(space, (spaces.Discrete, spaces.MultiDiscrete, spaces.MultiBinary)):
        return True
    elif isinstance(space, spaces.Box):
        return False
    elif isinstance(space, spaces.Tuple):
        return all(map(is_discrete, space.spaces))

    raise NotImplementedError("Unknown space {} of type {} supplied".format(space, type(space)))