7.30每日学习课后作业之函数的使用

# 默写:
# 函数中参数的分类及其作用
# 位置
# 关键字
# 形参
# 实参
# 可变长度参数
#
# 练习题:
# 1.
# 使用函数新的知识点继续完善, 优化购物车
import os
product_list = [['Iphone7',5800],
                ['Coffee',30],
                ['疙瘩汤',10],
                ['Python Book',99],
                ['Bike',199],
                ['ViVo X9',2499],]
shoppint_cart={}
current_userinfo=[]
db_file=r'db.txt'
while True:
    print("""
    1 登陆
    2 注册
    3 购物
    """)
    choice=input('选择>>>:')
    if choice=='2':
        name=input('用户名>>>:').strip()
        while True:
            pwd=input('密码>>>>:')
            pwd1=input('确认密码>>>>:')
            if pwd==pwd1:
                print('注册成功')
                break
            else:
                print('两次密码不一致，请重新输入')
        amount=input('充值金额:')
        with open(db_file,mode='a',encoding='utf-8')as f:
            f.write('%s,%s,%s\n'%(name,pwd,amount))
    elif choice=='1':
        tag=True
        count=0
        while tag:
            if count==3:
                print('\033[45m尝试次数过多，退出。。。\033[0m')
                break
            uname=input('用户名:').strip()
            pwd = input('密码：').strip()
            with open(db_file,mode='r',encoding='utf-8') as f:
                for line in f:
                    line = line.strip('\n')
                    user_info = line.split(',')
                    uname_of_db = user_info[0]
                    pwd_of_db = user_info[1]
                    balance_of_db = int(user_info[2])

                    if uname == uname_of_db and pwd == pwd_of_db:
                        print('\033[48m登陆成功\033[0m')

                        # 登陆成功则将用户名和余额添加到列表
                        current_userinfo = [uname_of_db, balance_of_db]
                        print('用户信息为：', current_userinfo)
                        tag = False
                        break
                else:
                    print('\033[47m用户名或密码错误\033[0m')
                    count +=1
    elif choice=='3':
        pass

















# 2.
# 使用函数完成以下功能, 数据格式如下
# [
#     {“name”:”张无忌”, ”number”, ”sh01”, ”math”:90,”english”:87,”chinese”:56},
# {“name”:”武则天”, ”number”, ”sh02”, ”math”:40,”english”:97,”chinese”:67}....
# ]
# 提供以下功能函数
# 获取指定学生的成绩
# 获取指定学号的成绩
# 根据学生的学号修改姓名
# 根据姓名修改指定学科的成绩
# 删除指定学生及其成绩
# list1=[   {"name":"张无忌", "number":"sh01",'grade':{"math":90,"english":87,"chinese":56}},
# {"name":"武则天", "number":"sh02",'grade':{ "math":40,"english":97,"chinese":67}},
# ]
# def stu_score(name):
#     for i in list1:
#         if name == i['name']:
#             for j in i['grade']:
#                 print('%s %s' %(j,i['grade'][j]))
#             return
# stu_score('武则天')

# def  stu_number(num):
#     for i in list1:
#         if num == i['number']:
#             for j in i['grade']:
#                 print('%s %s' % (j, i['grade'][j]))
#             return
# stu_number('sh02')

# def stu_modify(num,new_name):
#     for i in list1:
#          if num == i['number']:
#             print(i['grade'])
#             i['name']=new_name
#             print(list1)
#             return
# stu_modify('sh02','alex')

# def pro_modify(name,project,socre):
#     for i in list1:
#         if name == i['name']:
#             i['grade'][project]=socre
#             print(list1)
#             return
# pro_modify('武则天','english','99')

# def del_stuascore(name):
#     for i in list1:
#         if name==i['name']:
#             list1.remove(i)
#             print(list1)
# del_stuascore('武则天')


        # 3.
        # 博客作业
        # http: // www.cnblogs.com / linhaifeng / articles / 7531972.html  # _label5







        # 拓展:
        # ATM
        # 参考博客