save project

diy2.py

@@ -6,8 +6,9 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    print("账号和密码错误！")
-    if name==username and password!=userpassword:
+    if password!=userpassword:
         print("密码错误")
-    if password==userpassword and name!=username:
+        continue
+    if name!=username:
         print("账号错误")
+print("欢迎来到贝尔编程！")