Python学习3

猜数游戏

import random
while True:
    first=random.randrange(100)
    while True:
        second=int(input('请猜'))
        if first>second:
            print('小了')
        elif first==second:
            print('对了')
            break
        else:
            print('大了')



购物车

flag = 'ok'
lists = []
goods_lists = [['水果',[['鸭梨',18],['桃子',30],['苹果',21],['榴莲',5],['香蕉',3]]],['蔬菜',[['胡萝卜',11],['香菜',21],['圆白菜',3],['土豆',2],['地瓜',4]]]]
while True:
    if flag=='no':
        total_price = 0
        print('商品名称 单价 购买数量 购买总价')
        for a, b, c, d in lists:
            print(' ' + a, ' ' * 3 + str(b), ' ' * 3 + str(c), ' ' * 3 + str(d))
            total_price += d
        print('总价格为' + str(total_price))
        break
    n = 1
    print('欢迎光临 XXX超市')
    print('################################')
    for a,b in goods_lists:
        print('           '+str(n)+' '+a)
        n = n+1
    print('################################')
    num1 = int(input('请选择分类序号:')) - 1
    while True:
        m = 1
        print('欢迎光临 XXX超市')
        print('################################')
        for goods in goods_lists[num1][1]:
            print('           '+str(m)+' '+goods[0]+' '+str(goods[1])+'元')
            m = m + 1
        print('################################')
        num2  = int(input('请选择商品序号:'))-1
        if num2==-1:
            break
        if num2==-2:
            flag = 'no'
            break
        n_lists = []
        num3 = int(input('请选择购买数量(输入0返回上级菜单，输入-1结算退出)'))
        n_lists.append(goods_lists[num1][1][num2][0])
        n_lists.append(goods_lists[num1][1][num2][1])
        n_lists.append(num3)
        n_lists.append(goods_lists[num1][1][num2][1]*num3)
        lists.append(n_lists)


我的

flag = 'ok'
lists = []
goods_lists = [['水果', [['苹果', 5], ['葡萄', 10], ['草莓', 15], ['芒果', 8], ['橘子', 6]]]
    , ['蔬菜', [['胡萝卜', 2], ['土豆', 1], ['芹菜', 3], ['菠菜', 4], ['大葱', 1]]]]
while True:
    if flag == 'no':
        total_price = 0
        print('商品名称 单价 数量 总价')
        for a, b, c, d in lists:
            print(' ' + a, '  ' * 3 + str(b), '  ' * 3 + str(c), '  ' * 3 + str(d))
            total_price += d
        print('总价为' + str(total_price))
        break

    n = 1
    print('欢迎光临55超市')
    print('########################')
    for a, b in goods_lists:
        print('          '+str(n)+'  '+a)
        n = n + 1
    print('########################')

    num1 = int(str(input('请选择分类序号:'))) - 1
    while True:
        m = 1
        print('欢迎光临55超市')
        print('########################')
        for goods in goods_lists[num1][1]:
            print('           '+str(m)+' '+goods[0]+' '+str(goods[1])+'元')
            m = m + 1
        print('########################')
        num2 = int(str(input('请选择商品序号:'))) - 1
        if num2 == -1:
            break
        if num2 == -2:
            flag = 'no'
            break
        n_lists = []
        num3 = int(str(input('请选择购买数量(输入0返回上级菜单,输入-1结算退出)')))
        n_lists.append(goods_lists[num1][1][num2][0])
        n_lists.append(goods_lists[num1][1][num2][1])
        n_lists.append(num3)
        n_lists.append(goods_lists[num1][1][num2][1] * num3)
        lists.append(n_lists)