#!/usr/bin/env python3

import random

def runner():
    print(forge())

def percentage():
    return random.randint(0, 100)

def readfiles(file1 = "part1.txt", file2 = "part2.txt", file3 = "part3.txt"):
    for f in (file1, file2, file3):
        with open(f) as o:
            yield o.readlines()

def forge():
    pa, pb, pc = (random.choice(i).strip() for i in readfiles())
    return "%i%% %s %s %s." % (percentage(), pa, pb, pc)