#for...in循环输出四种九九乘法表效果
#1左上三角形
'''
for i in range(1,10):
    for j in range(i,10):
        print("{}*{}={:<4}".format(i,j,i*j),end=" ")
    print("")
'''
#2左下三角形
'''
for i in range(1,10,1):
    for j in range(1,i+1):
        print("{}*{}={:<4}".format(i,j,i*j),end=" ")
    print("")
'''
#3右上三角形
'''
for i in range(1,10):
    for j in range(1,i):
        print(end="             ")
    for k in range(i,10):
        print("{}*{}={:<4}".format(i,k,i*k),end="")
    print("")
'''
#4长方形
'''
for i in range(9,0,-1):
    for j in range(9,0,-1):
        print("{}*{}={:<4}".format(i,j,i*j),end=" ")
    print("")
'''
#while循环输出四种九九乘法表效果
#1
'''
i=1
while i<10:
    j=1
    while j<=i:
        print("{}*{}={:<4}".format(i,j,i*j),end=" ")
        j+=1
    print("")
    i+=1
'''
#2
'''
i=9
while i>0:
    j=1
    while j<=i:
        print("{}*{}={:<4}".format(i,j,i*j),end=" ")
        j+=1
    print("")
    i-=1
'''
#3
'''
i=1
while i<10:
    j=9
    while j>=i:
        print("{}*{}={:<4}".format(i,j,i*j),end="  ")
        j-=1
    print("")
    i+=1
'''
#4
'''
i=1
while i<10:
    for j in range(1,i+1):
        print("{}*{}={:<4}".format(i,j,i*j),end=" ")
    print("")
    i+=1
'''
#使用文件和目录操作，定义一个统计指定目录大小的函数。
'''
import os
def getsize(dir):
    dirlist=os.listdir(dir)#列出目录下的所有文件和目录
    size=0
    for sub_dir in dirlist:
        sub_path=os.path.join(dir,sub_dir)
        if os.path.isfile(sub_path):#判断是否是文件，如果是获取文件大小
            size+=os.path.getsize(sub_path)
        elif os.path.isdir(sub_path):#判断是否是目录
            size+=getsize(sub_path)#递归调用自己
    return size
print("{:.4f}KB".format(getsize('D:/1')/1024))
'''
#参考1.10的综合案例中的学生信息管理，来实现一个自动取款机的存取款模拟效果。
#自助取款机
#定义自助取款机欢迎界面
def welcome():
    print("="*10,"招商银行","="*10,"\n")
    print(" "*22,"自助ATM机"," "*20,"\n")  
    print("="*26,"\n")
#定义变量存储账户信息
user_list=[{"cardnumber":"0000000000","password":"000000","balance":10000},
               {"cardnumber":"1111111111","password":"111111","balance":10000},
               {"cardnumber":"2222222222","password":"222222","balance":10000}]
#定义自助取款机登陆验证函数
def login(user_cardnumber,user_password):
    for i in range(len(user_list)):
        if user_cardnumber==user_list[i]["cardnumber"] and user_password==user_list[i]["password"]:
            return i
#定义自助取款机操作首界面
def interface():
    print("="*14,"请选择服务内容","="*14,"\n")
    print("{0:2} {1:12} {2:10} {3:12}".format(" ","1.余额查询","2.取款","3.存款"),"\n")
    print("{0:2} {1:12} {2:12}".format(" ","4.修改密码","5.退卡"),"\n")
    print("="*38,"\n")
#定义自助取款机账户信息界面
def query(user_id):
    print("="*14,"账户信息","="*14,"\n")
    print("{0:18}{1:11}\n".format("银行卡号","账户余额"))
    print("{0:19}{1:<11}\n".format(user_list[user_id]["cardnumber"],user_list[user_id]["balance"]))
#定义自助取款取款函数
def withdrawal(amount):
    i=user_list[user_id]["balance"]-int(amount)
    if i>=0:
        user_list[user_id]["balance"]-=int(amount)
    else:
        print("账户余额不足\n")
#定义自助取款机存款函数
def deposit(amount):
    user_list[user_id]["balance"]+=int(amount)
#定义自助取款机修改密码函数
def change_password(old_password,new_password1,new_password2):
    if old_password==user_list[user_id]["password"]:
        if new_password1==new_password2:
            user_list[user_id]["password"]=new_password1
            print("密码修改成功\n")
            return 1
        else:
            print("修改密码失败，您2次输入的密码不一致\n")
            return 2
    else:
            print("旧密码输入错误\n")
            return 0
        
while True:
    welcome()
    user_cardnumber=input("请输入您的银行卡号：")
    print(" ")
    user_password=input("请输入您的银行卡密码：")
    print(" ")
    user_id=login(user_cardnumber,user_password)#验证卡号和密码是否与存储的信息相匹配
    if user_id !=None:
        print("登陆成功！\n")
        while True:
            interface()#登陆成功，显示操作首界面
            key_word=input("请输入您要办理的业务代码：")
            print(" ")
            # 根据键盘值，判断并执行对应的操作
            if key_word=="1":
                query(user_id)
                input("按回车键返回")
                print(" ")
            elif key_word=="2":
                print("="*14,"取款业务办理","="*14,"\n")
                amount=input("请输入取款金额：")
                print(" ")
                withdrawal(amount)
                query(user_id)
                input("按回车键返回")
                print(" ")
            elif key_word=="3":
                print("="*14,"存款业务办理","="*14,"\n")
                amount=input("请输入存款金额：")
                print(" ")
                deposit(amount)
                query(user_id)
                input("按回车键返回")
                print(" ")
            elif key_word=="4":
                print("="*14,"密码修改业务","="*14,"\n")
                old_password=input("请输入旧密码：")
                print(" ")
                new_password1=input("请输入新密码：")
                print(" ")
                new_password2=input("请再次输入密码：")
                print(" ")
                save=change_password(old_password,new_password1,new_password2)#修改密码
                #如果旧密码输入错误即退出
                if save==0:
                    break
            elif key_word=="5":
                print("="*14,"请收好您的卡片","="*14,"\n")
                break
            else:
                print("="*14,"业务代码输入有误，请重新输入","="*14,"\n")