Python is an interpreted language that doesn't need a main function explicitly. You can define any package entry points you want at the package config level. (setup.py, etc)

example: What I meant was I prefer language that treat developers like adults. If I want ptrhon's "ux" to hide some functions or objects I can do that with underscores, but nothing is private, a developer using my library can do whatever they want with it, access whatever internals they want (at their own risk of course)