np.tile()用法

from numpy import *
a=array([1,2,3])
b=tile(a,(2,3,4))
print(b)

[[[1 2 3 1 2 3 1 2 3 1 2 3]
  [1 2 3 1 2 3 1 2 3 1 2 3]
  [1 2 3 1 2 3 1 2 3 1 2 3]]

 [[1 2 3 1 2 3 1 2 3 1 2 3]
  [1 2 3 1 2 3 1 2 3 1 2 3]
  [1 2 3 1 2 3 1 2 3 1 2 3]]]

括号从外到内进行复制相应的倍数