utils.py 文件源码

def is_vector_list(x):
    """make an educated guess whether ``x`` is a list of vectors.

    >>> from cma.utilities.utils import is_vector_list as ivl
    >>> assert ivl([[0], [0]]) and not ivl([1,2,3])

    """
    try:
        return np.isscalar(x[0][0])
    except:
        return False