np.repeat用法

>>> import numpy as np
>>> x = np.array([[1,2], [3,4]])
>>> np.repeat(x, 2)
array([1, 1, 2, 2, 3, 3, 4, 4])
>>> np.repeat(x, 1)
array([1, 2, 3, 4])
>>> np.ravel(x)
array([1, 2, 3, 4])
>>> np.repeat(x, 1, axis = 0)
array([[1, 2],
       [3, 4]])
>>> np.repeat(x, 2, axis = 0)
array([[1, 2],
       [1, 2],
       [3, 4],
       [3, 4]])
>>> np.repeat(x, (3,4), axis = 0)
array([[1, 2],
       [1, 2],
       [1, 2],
       [3, 4],
       [3, 4],
       [3, 4],
       [3, 4]])