np.random.rand size code example

Example 1: random matrix python

np.random.rand(3,2)

Example 2: numpy randn with a shape of another array

a = np.zeros([2, 3])
print(a.shape)
# outputs: (2, 3)
b = np.random.randn(*a.shape)
print(b.shape)
# outputs: (2, 3)