auto save

diy2.py

@@ -6,9 +6,8 @@ while True:
     if a==username and b==userpassword:
         print("输入正确，登录成功")
         break
-    elif a==username and b!=userpassword:
-        print("名称正确，密码错误，请重新输入")
-    elif a!=username and b==userpassword:
-        print("密码正确，名称错误，请重新输入")
-    else:
-        print("输入错误，请重新输入")
\ No newline at end of file
+    if a!=username :
+        print("名称错误，请重新输入")
+        continue
+    if  b!=userpassword :
+        print("密码错误，请重新输入")
\ No newline at end of file