In a pyproject.toml file you can create/define scripts that reference an entry function. E.g.:
# myapp/app.py
def main():
print('Hello!')
and in the pyproject.toml:
[project.scripts]
app = "myapp.app:main"
You can still use the __name__ check at the end of the file, e.g.:
if __name__ == '__main__':
main()
That way it works both as a standalone and when installed via pip/uv. -- Note: The scripts created by the installer are slightly more complicated versions of that __name__ check that handle the application argument (arg 0) and the exit code as the return value from main().
It's not gone per se -- you can still write out the long form version if you want (this is required for backward compatibility).
What's now permitted is:
1. a simpler way of declaring a main method on a class -- you don't need the public or static, and the args is optional, so you can declare a `void main() { ... }` method on a constructable class;
2. declaring a main function (and other variables/functions) outside of a class -- here, the startup code will handle calling the main function, although I don't think the ability to call anonymous functions currently extends outside of the main function/file.
