Python创建一个设置大小的numpy数组

Question

I want to create a numpy array of a set size. I have a numpy array containing 4 numbers. My question right now is how to fill the array with zeros till an arbitrary size eg 7 in this example

pos = np.array([1,4,6,8])
new_pos = np.array([1,4,6,8,0,0,0])

Answer 1

np.zeros(5) # returns array([ 0.,  0.,  0.,  0.,  0.])
new_pos = pos.append(np.zeros(5))

5 has been used arbitrarily. In your case it will be 3.