def affine_forward(x, w, b): out = None N = x.shape[0] x_row = x.reshape(N, -1) out = np.dot(x_row, w) + b.reshape(1, -1) cache = (x, w, b) return out, cache def affine_relu_forward(x, w, b): x = x.reshape(x.shape[0], -1) w = np.random.randn(784, 100) b = np.zeros((1, 100)) out, cache = layers.affine_forward(x, w, b) a, fc_cache = layers.affine_forward(x, w, b) out, relu_cache = layers.relu_forward(a) cache = (fc_cache, relu_cache) return out, cacheValueError: shapes (40,6272) and (784,100) not aligned: 6272 (dim 1) != 784 (dim 0)

这段代码中出现了一个错误，错误信息为"ValueError: shapes (40,6272) and (784,100) not aligned: 6272 (dim 1) != 784 (dim 0)"，意思是两个矩阵的维度不匹配，无法进行矩阵乘法运算。具体来说，第一个矩阵的第二个维度为6272，而第二个矩阵的第一个维度为784，这两个维度不相等，因此无法进行乘法运算。您需要检查代码中的矩阵维度是否正确，以保证能够进行矩阵乘法运算。