Parse environment variables in config file

[netw0rkf10w]

I would like to know if there's a way to use environment variables in a config file. In the following example, $HOME and $CUDA will not be converted to the corresponding values:

data-dir=$HOME/data
cuda-dir=$CUDA

Thank you very much in advance for your help!

[bw2]

This is not currently supported. It's non-trivial to add this behavior in a robust way.

[bw2]

or it might not be that difficult. If you still need this, please submit a PR, adding an option to the ArgParser constructor to enable this behavior (since enabling it by default might break existing config files). Then run os.path.expandvars() on config file value strings.