Divisores Primos 3.1

#!/usr/bin/env python
# -*- coding: UTF-8 -*-
__author__ = 'Julio Tentor jtentor@gmail.com, Brian Mayo brianmay.dev@gmail.com'


from math import sqrt
from functools import reduce
from time import perf_counter


def timeformat(ticks):
    hours, rem = divmod(ticks, 3600)
    minutes, seconds = divmod(rem, 60)
    return "{:0>2}:{:0>2}:{:09.6f}".format(int(hours), int(minutes), seconds)


def isprime(number):
    if number < 1:
        raise ValueError("Error de argumento en isprime")
    if number == 1 or number == 2:
        return True
    if number % 2 == 0:
        return False
    for divider in range(3, int(sqrt(number)) + 1, 2):
        if number % divider == 0:
            return False
    return True


def show(number, dividers):
    print("Divisores", dividers)
    for divider in dividers:
        print("%5d" % divider, "+", "%5d" % number, "/", "%5d" % divider, "=", "%5d" % (divider + number / divider))


def checkprimes(number, dividers):
    for divider in dividers:
        if not isprime(divider + number / divider):
            return False
    return True


def testproceduralprogramming(limit):
    starttime = perf_counter()
    for number in range(limit, 1, -1):
        dividers = [1]
        for divider in range(2, number):
            if number % divider == 0:
                dividers.append(divider)
        dividers.append(number)
        if checkprimes(number, dividers):
            print("El numero que buscamos es", number)
            #show(number, dividers)
            break
    stoptime = perf_counter()
    print("Tiempo de ejecución versión Procedural", timeformat(stoptime - starttime))


def testfunctionalprogramming(limit):
    starttime = perf_counter()
    for number in range(limit, 1, -1):
        dividers = [1] + [divider for divider in range(2, number) if number % divider == 0] + [number]
        if reduce(lambda a, b: a and b, map(lambda divider: isprime(divider + number / divider), dividers)):
            print("El numero que buscamos es", number)
            #show(number, dividers)
            break
    stoptime = perf_counter()
    print("Tiempo de ejecución versión Funcional ", timeformat(stoptime - starttime))


def test(limit):
    testproceduralprogramming(limit)
    testfunctionalprogramming(limit)


if __name__ == '__main__': test(10000)