Python-大樂透

import random,string

nums = set()
num = input('請輸入要產生多少注：').strip()
while len(nums)!=int(num):
    before = ' '.join(sorted(random.sample([str(nember).zfill(2)for nember in range(1,33)],5)))
    back = ' '.join(sorted(random.sample([str(n).zfill(2)for n in range(1,13)],2)))
    numbers = ('前區:%s  后區：%s\n'%(before,back))
    nums.add(numbers)
with open('大樂透.txt','a+',encoding='utf-8') as fw:
    fw.writelines(nums)