Launch tutorial for Humble error

[aenoca]

The tutorial for Humble leads to an error when using colcon build (source/Tutorials/Intermediate/Launch/Launch-system.rst). To note, the line in the setup.py file to add the launch file causes the issue.

import os
import glob
# Other imports ...

package_name = 'py_launch_example'

setup(
    # Other parameters ...
    data_files=[
        # ... Other data files
        # Include all launch files.
        (os.path.join('share', package_name, 'launch'), glob(os.path.join('launch', '*launch.[pxy][yma]*')))
    ]
)

Issue:

[aenoca]

from glob import glob

[aenoca]

Misread of instructions