Note: help and version output are generated by a naïve script which tries a few variants of
<command> --help, <command> -h etc. to find the command's help and version info.
Sometimes it gets lucky, sometimes it doesn't; if the output below looks wrong, it probably is.
pyflakes3 --version (return code: 0)
pyflakes3 --help (return code: -15)
Usage: pyflakes3 [options]
--version show program's version number and exit
-h, --help show this help message and exit