[Python知识库]简易银行ATM程序制作（基于Python）

# 客户信息单（以字典形式储存）
card1={"姓名":"张三","卡号":"1001","密码":"123","余额":10000}
card2={"姓名":"李四","卡号":"1002","密码":"123","余额":20000}
card3={"姓名":"王五","卡号":"1003","密码":"123","余额":30000}
card4={"姓名":"赵六","卡号":"1004","密码":"123","余额":40000}
cardsList=[card1,card2,card3,card4]

count=0 #记录输入错误的次数

while 1==1:
    cnum = input("请输入卡号：")
    cpwd = input("请输入密码：")
    msg = 0 #记录登录的状态，失败为0，成功为1
    for card in cardsList:
        if cnum==card["卡号"] and cpwd==card["密码"]:
            msg = 1
            print("恭喜你！",card["姓名"],"！验证成功！")

    if msg == 0:
        count+=1
        if count == 3:
            print("您已经连续3次输入错误，银行卡已被锁定！")
            break
        else:
            print("验证失败！您已经连续",count,"次输入错误","今日还剩",3-count,"次机会！")

            continue

    #银行业务
    while 2==2:
        choice = int(input("请输入要办理的银行业务编号（1. 存款 2.取款 3.退出）："))
        if choice == 1:
            money1 = float(input("请输入一个存款金额："))
            for card in cardsList:
                if card["卡号"] == cnum:
                    card["余额"] = card["余额"] + money1
                    print("存款成功！存入",money1,"元！余额",card["余额"],"元！")
                    break # 注break跳出整个循环，可以直接退出
        
        elif choice == 2:
            money2 = float(input("请输入一个取款金额："))
            for card in cardsList:
                if card["卡号"] == cnum:
                    card["余额"] = card["余额"]-money2
                    print("取款成功！取出",money2,"元！余额",card["余额"],"元！")
                    break
        
        elif choice == 3:
            print("---------已退出！---------")
            break
        else:
            print("没有此业务，请重新选择！")
            continue