save project

diy2.py

@@ -6,5 +6,10 @@ while True:
     if name ==l and password ==b:
     if name ==l and password ==b:
         print("登录成功")
         print("登录成功")
         break
         break
-    print("用户名或密码错误，请重新登录")
-print("欢迎来到编程世界")
+    if name != l:
+        print("用户名不存在，请重新输入！")
\ No newline at end of file
+        continue
+    if password != b:
+        print("密码错误，请重新输入！")    
+print("欢迎来到编程世界")
+    
\ No newline at end of file