save project

diy2.py

@@ -6,10 +6,11 @@ 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
-    if name==username and password!=userpassword:
-        print("密码错误，请重新输入！")
-    if password==userpassword and name!=username:
+    if name!=username:
         print("用户名错误，请重新输入！")
         print("用户名错误，请重新输入！")
+        continue
+    if password!=userpassword:
+        print("密码错误，请重新输入！")