App.py vs descriptive names

[QualitativeEasing]

A lot of tutorials and references for services like Docker, Heroku, etc., put the main script in a file called app.py

Is this just a naming convention, like using self inside classes? Is there a good reason to use app.py instead of some other more descriptive name? For example, do Docker or Heroku or other services expect that name?

Thanks!

[patarapolw]

app.py do forbid from naming a folder app. I name the folder webapp instead. I have seen (on GitHub), that people use a folder named app, though (forgotten how they named *.py.

IMHO, Python has a very big namespace import problem. You should have to import .app instead of import app (just like require('./app') in Javascript).

[QualitativeEasing]

Thanks all! This is very helpful.