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use a component resource, example:
<https://github.com/jaxxstorm/pulumi-examples/blob/e6fc90bf0e4337ce8d87edede537de6e8b40b291/python/aws/webserver_component/__main__.py#L5>
<https://github.com/jaxxstorm/pulumi-examples/blob/e6fc90bf0e4337ce8d87edede537de6e8b40b291/python/aws/webserver_component/webserver.py>

If you have a file like kafka/kafka.py with component resources, do you need an `__init__.py` file in the kafka folder? I would think importing component resources and functions would be the same, otherwise. 

That said, use component resources they are neat.

Yes, you can split up resource creation into functions. Your example should work as written with the separate files

I think it should work without the init file, but it can be added as a blank file if you get import errors

I would really not recommend using functions, it’s a road to complex nesting and pain.