save project

diy1.py

@@ -6,5 +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")
-print("欢迎来到贝尔编程!")
+    if name!=username:
+        print("用户名不存在,请重新输入!")
\ No newline at end of file
+    if password!=userpassword:
+        print("密码错误,请重新输入")    
+print("欢迎来到贝尔编程!")