Python--太多的值无法解压缩

我有这个密码

N, D = x.shape
running_mean = bn_param.get('running_mean', np.zeros(D, dtype=x.dtype))
running_var = bn_param.get('running_var', np.zeros(D, dtype=x.dtype))

上面写着：ValueError：太多的值无法解包

我知道x的尺寸是50x3x32x32 我想把50放入N变量，我需要把3x32x32放入D变量。

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我怎么能这么做？谢谢。

x.shape

有两个以上的值，与要解包的变量数不匹配（多重赋值）：

如果您使用的是Python 3.x，则可以使用：

>>> shape = (50, 3, 32, 32)
>>> N, D = shape
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: too many values to unpack

>>> shape = (50, 3, 32, 32)
>>> N, D = shape[0], shape[1:]  # [0] to get 1st, [1:] to get 2nd, 3rd,.. up to end
>>> N
50
>>> D
(3, 32, 32)

>>> N, *D = shape
>>> N
50
>>> D
[3, 32, 32]