topic Re: Python extension 2.0 - include own sub-modules in Open Q&A

Python extension 2.0 - include own sub-modules

r_weber — Fri, 18 Jul 2025 11:08:25 GMT

Hello extension devs,

I have a strange behavior when building a python 2.0 extension. I structure my code/modules like this:

extension extension.yaml actiavtionSchema.json my_extension - mymodule1 - submodule sub.py - mymodule2 module.py __main__.py setup.py

When I run the extension locally with the simulator everything works great. But when I build the extension only some/not all module subdirectories are included in the build and such I'm getting missing module errors.
Including the module directories in setup.py doesn't make sense as they would be treated as PyPi packeages, shouldn't the build include those without anything else?

Re: Python extension 2.0 - include own sub-modules

r_weber — Sat, 19 Jul 2025 18:31:32 GMT

Answering to my own dumbness:
Of course you need to include a __init__.py (can be empty) in every sub directory as well so that the setuptools used when building the extension will include those directories!

Re: Python extension 2.0 - include own sub-modules

r_weber — Mon, 21 Jul 2025 07:54:25 GMT

Also if you want to include non *.py files in your extension, you might want to add this in the setup.py code:
e.g. to also package some json template files with the extension:

setup( ... extras_require={"dev": ["dt-extensions-sdk[cli]"]}, package_data={ "my_ext_module_name": ["templates/*.json"], }, )