python - AssertionError : HybridBlock requires the first argument to forward be either Symbol or NDArray, 但得到

Question

我正在尝试在我的图像上运行一个预制程序，图像类型是一个 numpy 数组。当我按下回车键时，我得到了这个错误:

AssertionError: HybridBlock requires the first argument to forward be
                either Symbol or NDArray, but got < class 'numpy.ndarray' >

有人知道怎么破解吗？当我在网上查看时，它说 NDArray 是 numpy.ndarray，所以我不确定它为什么会提示。非常感谢!

Answer 1

你必须 convert your numpy array to an mxnet NDArray :

In [11]: import numpy as np

In [12]: import mxnet as mx

In [13]: a = np.array([1, 2, 3])

In [14]: b = mx.ndarray.array(a)

In [15]: b
Out[15]:

[1. 2. 3.]
<NDArray 3 @cpu(0)>

In [16]: type(b)
Out[16]: mxnet.ndarray.ndarray.NDArray