I just started evaluating this project for generating SPDX files manually, but had some trouble to finally generate a custom document:

• The example at https://github.com/spdx/tools-python#example omits all imports.
• The example starts with parsing an existing file. As documentation is sparse anyway, this requires me to do quite some extra research on how to create a document itself manually.
• Instead of exposing the corresponding classes from the submodules of spdx.models inside spdx/models/__init__.py, I am required to import them from the corresponding submodules, which seems like some unnecessary overhead.