I started a new Python project and I want to have a good structure from the beginning. I’m reading some convention Python guides but I don’t find any info about how the main script must be named. Is there any rules for this? Is there any other kind of convention for folders or text files inside the project (like readme files)?
By the way, I’m programming a client-server app so there is no way for this to become a package (at least in the way a think a package is).
No such rule exists for python main script which starts your application. There are coding guidelines (PEP8) which you can follow to keep your code clean though.
You can check existing python applications which are easily available. May be open source/free software projects e.g yum (on rpm based distros) command, lots of python apps (you can checkout them from publicly available source code management systems e.g git repo) etc. You can check basic principles they follow. But there are no constraints as such.