Python Itertools experiments

accumulate.py

from itertools import accumulate 
from timeit import default_timer as timer

if __name__ == "__main__":
    custom_accumulate_start = timer()
    myList = range(0, 10000, 2)
    myTotal = 0
    myAccumulation = list()

    for myItem in myList:
        myTotal += int(myItem)
        myAccumulation.append(myTotal)

    custom_accumulate_end = timer()

    itertools_accumulate_start = timer()
    iterAccumulation = list(accumulate(myList))
    itertools_accumulate_end = timer()

    custom_accumulate_duration = custom_accumulate_end-custom_accumulate_start
    itertools_accumulate_duration = itertools_accumulate_end-itertools_accumulate_start
    difference = (itertools_accumulate_duration - custom_accumulate_duration)
    improvement = (difference/itertools_accumulate_duration) * 100

    assert myAccumulation == iterAccumulation

    print(f'custom accumulation result in {custom_accumulate_duration} seconds')
    print(f'itertools accumulation result in {itertools_accumulate_duration} seconds')
    print(f'{(difference/itertools_accumulate_duration) * 100}')