Why it is not working ?¿

Question

https://code.sololearn.com/cj4DPpY8Ik2a/?ref=app

Answer 1

You need put a arr3 = before np.append and np.sort

Answer 2

to expand on what Daniel said, the code would like something like this:

import numpy as np

arr3 = np.array([1, 4, 3, 6])

arr3=np.append(arr3, 2)
print (arr3)

arr3=np.sort(arr3)
print (arr3)

Answer 3

What do you do?