save project

diy2.py

@@ -6,9 +6,8 @@ while True:
     if name == username and password == userpassword:
     if name == username and password == userpassword:
         print("登录成功!")
         print("登录成功!")
         break
         break
-    print("用户名和密码错误!请重新输入")
-if name !=username:
-    print("用户名错误，请重新输入!")
-    continue
-if password!=userpassword:
-    print("!")
+    elif name !=username:
+        print("用户名错误，请重新输入!")
+    else password!=userpassword:
+        print("密码错误，请重新输入!")
+print("欢迎来到贝尔！")
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