Find out the memory size of a numpy array 

In this exercise, we are going to find the size of an array in memory.

Code

import numpy as np
arr = np.array([1,2,3,4,5,6,7,8,9,10])
print("Initial array:")
print(arr)
print("Size of the array in memory:")
print(arr.size * arr.itemsize)

Output

Initial array:
[ 1  2  3  4  5  6  7  8  9 10]
Size of the array in memory:
40