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  • day11 本日作业+周末作业

    一、今日作业

    1、编写文件copy工具

    with open("a.txt",mode="r",encoding="utf-8") as f1 ,open("b.txt",mode="w",encoding="utf-8") as f2:
        f2.write(f1.read())
    

    2、编写登录程序,账号密码来自于文件

    user_inp = input("请输入用户名:")
    pwd_inp = input("请输入密码:")
    with open("a.txt",mode="r",encoding="utf-8") as f :
        for line in f:
            username,password = line.strip().split(":")
            if username == user_inp and password == pwd_inp:
                print("登录成功")
                break
        else:
            print("账号或秘密错误")
    

    3、编写注册程序,账号密码来存入文件

    username = input("请输入账号:").strip()
    password = input("请输入密码:")
    with open("b.txt","a",encoding="utf-8") as f :
        f.write("
    {}:{}".format(username,password))
    

    二、周末综合作业:

    1、编写用户登录接口

    1、输入账号密码完成验证,验证通过后输出"登录成功"

    2、可以登录不同的用户

    3、同一账号输错三次锁定,(提示:锁定的用户存入文件中,这样才能保证程序关闭后,该用户仍然被锁定)

    import os
    count = 0
    tag = True
    list1 = []
    while tag:
        username = input("请输入用户名:")
        if os.path.exists("locked{}".format(username)):
            print("用户被锁定")
            count=0
            break
        password = input("请输入密码:")
        with open("a.txt",mode="r",encoding="utf-8") as f :
            for line in f :
                user,pwd = line.strip().split(":")
                if username == user and password == pwd:
                    print("登录成功")
                    tag = False
                    break
            else:
                if list1.count(username) ==2:
                    with open("locked{}".format(username),"w") as f :
                        print("错误3次该用户被锁定")
                else:
                    list1.append(username)
                    print(list1.count(username))
                    print("登录失败")
    

    2、编写程序实现用户注册后,可以登录

    import os
    list2=[]
    list1=["1","2","3"]
    while True:
        print('''
        1.注册
        2.登录
        3.退出
        ''')
        cmd = input("cmd>")
        tag=True
        if cmd == list1[0]:
            username = input("请输入你要注册的账号:")
            password = input("请输入你要注册的密码:")
            with open("a.txt","a",encoding="utf-8") as f :
                f.write(f"{username}:{password}
    ")
        elif cmd == list1[1]:
            while tag:
                use_inp = input("请输入你的用户名:")
                if os.path.exists(f"locked/{use_inp}"):
                    print("账号被锁定")
                    tag = False
                    break
                else:
                    pwd_inp = input("请输入你的密码:")
                    with open("a.txt","r",encoding="utf-8") as f :
                        for line in f :
                            username,password=line.strip().split(":")
                            if use_inp==username and password==pwd_inp:
                                print("登录成功")
                                tag = False
                                break
                        else:
                            if list2.count(use_inp) == 2:
                                with open(f"locked/{use_inp}","w",encoding="utf-8") :
                                    pass
                                print("账号被锁定")
                                break
                            else:
                                print("输入错误")
                                list2.append(use_inp)
                                print(list2.count(use_inp))
    
        elif cmd == list1[2]:
            break
        else:
            print("非法输入")
    
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  • 原文地址:https://www.cnblogs.com/hz2lxt/p/12487649.html
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