If you need to calculate variance in Python, then you can do the following.
Option 1 – Using variance() from Statistics module
import statistics
list = [12,14,10,6,23,31]
print("List : " + str(list))
var = statistics.variance(list)
print("Variance: " + str(var))
Option 2 – Using var() from numpy module
import numpy as np
arr = [12,43,24,17,32]
print("Array : ", arr)
print("Variance: ", np.var(arr))
Option 3 – Using sum() and List Comprehensions
list = [12,43,24,17,32]
average = sum(list) / len(list)
var = sum((x-average)**2 for x in list) / len(list)
print(var)
