save project

diy2.py

 username = "python"
 userpassword = "123456"
+i=3
 while True:
+    i>0
         name = input("输入用户名")
         password = input("输入密码")
         if name == username and password == userpassword:
             print("登录成功!")
+            i-=1
             break
         print("用户名和密码错误!请重新输入")
-while True():
         if name!=username:
             break
         print("用户名错误!请重新输入")
-while True():
         if password != userpassword:
-        break
         print("密码错误!请重新输入")
 print("欢迎来到贝尔编程!")
\ No newline at end of file