I ran the python file on its own, it works. However i seemed to have tried everything and i cannot seem to get the launch file to run the program properly. Hence i keep getting a zero on the quiz. Please help.
<node pkg="topics_quiz" type="my_script.py" name="topics_quiz_node" output="screen" />
Hello @ConoSammarco ,
We cannot see the image you shared. Could you maybe paste here the error message you are getting when running the launch file?
Best,
my apologies, here is the error message:
RLException: [topics_quiz.launch] is neither a launch file in package [topics_quiz] nor is [topics_quiz] a launchfile name
The traceback for the exception was written to the log file
Hello @ConoSammarco ,
The reason for this error is because you don’t have any ROS package named topics_quiz. You do have a folder named topics_quiz, but that’s not the ROS package name. If you check, for instance, the package.xml file, you will see the ROS package name in the <name> tag:
<?xml version="1.0"?>
<package format="2">
<name>tutorial</name>
<version>0.0.0</version>
In this case, the package name is tutorial. You can also find the ROS package name in the CMakeLists.txt file, line 2:
project(tutorial)
I suggest you create the package from zero, following the instructions explained in previous lessons, and then you can copy the Python script and launch files to the new package.
Best,