This repository in a testbed for ideas and development for conversion and visualisation. The system provides different transformations between NeTEx profiles and from and to GTFS. It is a very generic programmable system.
git clone https://github.com/skinkie/reference.git
In PyCharm don't use the folder reference as root, but use gtfs-netex-test.
Create a virtualenv etc. open a terminal in PyCharm and install the requirements.
pip install -r requirements.txt.