I am new to ROS, I have a problem when I import rospy into my script file example.py and run it: It says: Traceback (most recent call last): File "/home/nagarjunv/hk_ws/src/rvo/src/example.py...

I am new to ROS and rospy, and I am not familiar with non-simple data type as topic. I want to build a ROS node as both a subscriber and publisher: it receives a topic (a list of two float64), and...

I installed the ROS package for Crazyflie, I wanted to run a simple script but when I type sudo python3 execute_trajectory.py , it gives me an error of no module named rospy. This is the packag...

I have been following the book "Programming Robots with ROS: A Practical Introduction to the Robot Operating System" In the "Defining a New Message" part of the book we create a new message defini...