save project

diy2.py

@@ -5,12 +5,12 @@ while True:
     if i>0:
         name = input("请输入用户名:")
         if name != username:
-            print("用户名错误!请重新输入")
+            print("用户名错误")
             continue
         password = input("请输入密码:")
         if password != userpassword:
             print("密码错误!请重新输入")
-        i=i-1
+        i-=1
         if name == username and password == userpassword:
             print("登录成功!")
             break