No module named my_custom_srv_msg_pkg.srv

Course Support ROS Basics In 5 Days (Python)
1

I modified CMakeLists.txt and package.xml. And also I did run source devel/setup.bash.
But when I run “custom_service_server.py”, I keep getting errors.
(my_custom_srv_msg_pkg/MyCustomServiceMessage is created)

ImportErrorTraceback (most recent call last)
in ()
2
3 import rospy
----> 4 from my_custom_srv_msg_pkg.srv import MyCustomServiceMessage, MyCustomServiceMessageResponse # you import the service message python classes
5 # generated from MyCustomServiceMessage.srv.
6

ImportError: No module named my_custom_srv_msg_pkg.srv

2

Did you make sure to do chmod so that the python file is executable?

3

Did your messages and services successfully build? If they did, you should be able to find them under devel/include

4

I have the same issue, I’ve tried twice, including once where I literally copied the solutions. Please help!

5

All the build and message generation dependencies are correctly defined in package.xml and CMakeLists.txt? Have you tried deleting devel and build folders and building it again?

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6

Thank you! After I delete devel and build folder and build it. It works! Thank you!!

1 Like