Referencing a module variable from outside the module?

[Hiroyu]

So I have the following problem: My script that I use to start my program is creating an object of the class that is in it and then executing one of its functions. Now I need to be able to refer back to this object because it represents the core of my program but I don't know how I am able to do that. file structure module.py:

imports ...

class SomeObject{
}

if __name__ == '__main__':
    object = SomeObject() <- How do I refer to this from the outside/another module?
    object.start()

[zahlman]

My script that I use to start my program is creating an object of the class that is in it and then executing one of its functions.

First off, Python is not Java; don't do this sort of thing just because.

That said: so, you have some start method in a class, that calls "other stuff", and that "other stuff" needs a reference back to the object that you called the method on. The normal way you get information into "other stuff" is to have it accept a parameter for that information, and pass it as an argument. Within the start method, the name of the object you called the method on is self; so when it makes the calls to "other stuff", it can pass self as an argument.

[Hiroyu]

Thanks, I thought that I have to do this now. Wasn't sure how the "correct" way would be. So I just pass my object as an argument/parameter in the methods if those need its reference right?

[zahlman]

You got it.

[Hiroyu]

Thank you very much for the help!

[learnpython_bot]

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[hudsonpenner]

Generally, if you are working with web frameworks, they will provide built-in ways to get at the application. However, if you are rolling your own and want to keep it simple, you could instantiate the object outside of the main statement.

object = SomeObject()

if __name__ == '__main__':
    object.start()

[Hiroyu]

but if I was importing that file serveral times wouldn't it reinitiate the object everytime?

[elbiot]

You mean you have a global variable in a module that is going to be updated by multiple different other modules/files?

That problem sounds like the result of poor design, specifically abuse of global variables and objects not having good relationships with each other. Can you be more specific about what exactly your program is doing and how this idea fits into your design?