save project

diy2.py

 username = "1919810"
 userpassword = "114514"
 while True:
+    if i>0:
         name = input("请输入用户名:")
         password = input("请输入密码:")
+        i-=1
         if name == username and password == userpassword:
             print("登录成功!")
             break
         if name != username:
             print("账号输入错误")
-    else: 
+            continue
+        if password != userpassword: 
         print("密码输入错误")
+    else:
 print("欢迎来到贝尔编程!")
+exit()
\ No newline at end of file