# I'm currently attempting the Topics quiz. I'm so close but I'm stuck! **URL:** \ **Category:** ROS Basics In 5 Days (Python)\ **Created:** [July 11, 2020, 5:18pm UTC](https://get-help.theconstruct.ai/t/im-currently-attempting-the-topics-quiz-im-so-close-but-im-stuck/4384 "2020-07-11T17:18:14Z")\ **Posts on this page:** 1\ **Showing post:** 6
**Author:** ![bayodesegun](https://get-help.theconstruct.ai/user_avatar/get-help.theconstruct.ai/bayodesegun/32/10684_2.png) [@bayodesegun](https://get-help.theconstruct.ai/u/bayodesegun)\ **Post date:** [July 14, 2020, 10:32am UTC](https://get-help.theconstruct.ai/t/im-currently-attempting-the-topics-quiz-im-so-close-but-im-stuck/4384/6 "2020-07-14T10:32:17Z")
No, read about `rospy.spin()` here: > **[What is rospy.spin(), ros::spin(), ros::spinOnce(), and what are they for?](https://get-help.theconstruct.ai/t/what-is-rospy-spin-ros-spin-ros-spinonce-and-what-are-they-for/58)** > > First, let make a distinction based on the ROS API: rospy.spin() - used by ROS Python API. ros::spin() and ros::spinOnce() - used by ROS C++ API. That said, what are they for? They are all used in connection with subscribers. rospy.spin()... --- _[View the full topic](https://get-help.theconstruct.ai/t/im-currently-attempting-the-topics-quiz-im-so-close-but-im-stuck/4384)._