runme.py

import math

def get_digits_string_map(num):
    return list(map(int, str(num)))

def get_digits_string_list(num):
    return [int(char) for char in str(num)]

def get_digits(num):
    return [(num // (10 ** i)) % 10 for i in range(int(math.log10(num)), -1, -1)]

def get_digits_2(num):
    result = []
    if num == 0:
        result.append(0)
    while num:
        num, d = divmod(num, 10)
        result.append(d)
    result.reverse()
    return result

def get_digits_3(num):
    result = []
    if num == 0:
        result.append(0)
    while num:
        d = num % 10
        num = num // 10
        result.append(d)
    result.reverse()
    return result

def benchmark():
    import timeit

    def time_func(function):
        print(function.__name__, timeit.timeit(lambda: function(123456789123456789), number=1000000))
        
    time_func(get_digits_string_map)
    time_func(get_digits_string_list)
    time_func(get_digits)
    time_func(get_digits_2)
    time_func(get_digits_3)

if __name__ == "__main__":
    benchmark()