ShapeUtil.py 文件源码

def as2D(x):
    """ Convert input into to 2D numpy array.


    Returns
    -------
    x : 2D array

    Examples
    -------
    >>> as2D(5)
    array([[5]])
    >>> as2D([1,2,3])
    array([[1, 2, 3]])
    >>> as2D([[3,4,5,6]])
    array([[3, 4, 5, 6]])
    """
    if not isinstance(x, np.ndarray):
        x = np.asarray_chkfinite(x)
    if x.ndim < 1:
        x = np.asarray_chkfinite([x])
    while x.ndim < 2:
        x = x[np.newaxis, :]
    return x