Python - append VS extend efficiency

Question

Here is some code that I wrote using Python:

from math import sqrt
abundant_list = []

for i in range(12,28123+1):
    dividor_list = [1]
    for j in range(         


        

Answer 1

They take exact same time.

Here is the time taken for your code:

With dividor_list.extend([i/j,j])

>>> 
0:00:00.410000
>>> 
0:00:00.383000
>>> 
0:00:00.389000

With dividor_list.append(i/j); dividor_list.append(j)

>>> 
0:00:00.400000
>>> 
0:00:00.390000
>>> 
0:00:00.381000