save project

diy2.py

@@ -4,9 +4,11 @@ while True:
     name = input("请输入用户名:")
     if name!=username:   
         print("用户名错误!请重新输入")
+        continue
     password = input("请输入密码:")
     if password!=userpassword: 
         print("密码错误!请重新输入")
+        continue
     if name == username and password == userpassword:
         print("登录成功!")
         break