border2=np.zeros((430,10,3),dtype='int')border2[:,:,0]=0 code example

Example 1: declare numpy zeros matrix python

import numpy as np
dimensions = (3, 3)
np.zeros(dimensions) # 3x3 zeros matrix

Example 2: np.zeros([8,8,3])

>>> np.zeros([8,8,3])

array([[ 0.],
       [ 0.]])