save project

diy2.py

@@ -6,13 +6,15 @@ while True:
         name = input("请输入用户名:")
         password = input("请输入密码:")
         i=i-1
-    elif name == username and password == userpassword:
+        if name == username and password == userpassword:
             print("登录成功!")
             break
+        elif username!=userpassword:
             print("用户名和密码错误!请重新输入")
-        continue
-    elis username ！=userpassword:
+           
+        else:
             print("用户名和密码错误!请重新输入")
+            exit()
 print("欢迎来到贝尔编程!")