创建随机数矩阵的简单方法 [英] Simple way to create matrix of random numbers

问题描述

我试图创建一个随机数矩阵，但我的解决方案太长了，看起来很丑陋

I am trying to create a matrix of random numbers, but my solution is too long and looks ugly

random_matrix = [[random.random() for e in range(2)] for e in range(3)]

这看起来确定，但在我的实现是

this looks ok, but in my implementation it is

weights_h = [[random.random() for e in range(len(inputs[0]))] for e in range(hiden_neurons)]

推荐答案

您可以放置​​范围（len（））：

You can drop the range(len()):

weights_h = [[random.random() for e in inputs[0]] for e in range(hiden_neurons)]

但实际上你应该可以使用numpy。

But really, you should probably use numpy.

In [9]: numpy.random.random((3, 3))
Out[9]:
array([[ 0.37052381,  0.03463207,  0.10669077],
       [ 0.05862909,  0.8515325 ,  0.79809676],
       [ 0.43203632,  0.54633635,  0.09076408]])

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