Using parameters of a python configuration as input to external tools.

Hi! 

Is it possible to pass the parameters from my run configuration (under the "parameters:" field) into a custom "Before launch" external tool?

For example, it is possible to create an external tool in before launch and pass as argument "$FilePath$". Ideally I would want to also pass "$pythonParameters$", but obviously that is not an option. Is there a way to do it?

Thanks!