娱乐：不重复的机选大乐透

import random

num = (input('输入需要购买的彩票数：')).strip()
if num and num.isdigit() and int(num) >0:
    l2 = []
    for i in range(int(num)):
        l = []
        while len(l) < 5:
            b = random.randint(1, 35)
            b = str(b).zfill(2)
            if b not in l:
                l.append(b)

        l.sort()
        b = random.randint(1, 12)
        b = str(b).zfill(2)
        l.append(b)

        while len(l) < 7:
            b = random.randint(1, 2)
            b = str(b).zfill(2)
            if int(b) == int(l[5]):
                continue
            elif int(b) > int(l[5]):
                l.append(b)
            else:
                l.insert(5, b)
        if l not in l2:
            l2.append(l)

        qian = l2[i][:5]
        hou = l2[i][-2:]
        print('第%s注彩票，前区：%s，后区：%s'%(i,qian,hou))
else:
    print('输入错误')