What are the best practices? Do you use Sphinx. If so how does your deployment look like? Is it worth the effort for a small startup to spend time and effort on it?
It totally depends on what you want to succeed. In our case, for example, we break our python code into microservices so it is more important documenting the APIs rather the code itself. If you are building complicated libraries, yes sphinx is the choice to go. Most important of all is to understand your deployments and your code lifecycle.