auto save

diy2.py

-username = "zsw"
-userpassword = "123456"
-i=3
-while True:
-    if i>0:
-        a = input("请输入用户名:")
-        b = input("请输入密码:")
-        i=i-1
-        if a == username and b == userpassword:
-            print("登录成功!")
-            break
-        if username!=a:  
-            print("用户名错误!请重新输入")
-            print("你还剩"+str(i)+"次机会")
-            continue
-        if userpassword!=b:
-            print("密码错误!请重新输入")
-            print("你还剩"+str(i)+"次机会")
-    else:
-        print("账号锁定")
-        exit()
-print("欢迎来到贝尔编程!")
\ No newline at end of file