How should I structure my classes and files in python?

Question

My code is currently in one big file:

# file 1: ./mainfile.py
class Namespace:
    class This:
        ...
    class That:
        ...

mainFunc(Namespace.This(), Namespace.That())

I would like my code to look something like this:

# file 1: ./namespace/this.py
class This:
    ...

# file 2: ./namespace/that.py
class That:
    ...

# file 3: ./mainfile.py
import ???
mainFunc(Namespace.This(), Namespace.That())

What changes do I have to make so that I can still use exactly the same call to mainFunc()?

Neil G · Accepted Answer · 2012-03-07 09:36:07Z

1

You need to make a package. See the documentation.

answered Mar 7, 2012 at 9:36

Neil G

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4 Comments

f.ardelian Over a year ago

I got to this part. I put the class This in the file namespace/this.py, but when I import namespace.this in the main file, I get an error saying ImportError: No module named namespace

Neil G Over a year ago

@f.ardelian: did you add the __init__.py file into the directory namespace?

f.ardelian Over a year ago

Okay, that solved one thing. Now, do you know anything about using Namespace.This() instead of Namespace.this.This()?

Neil G Over a year ago

I believe in Python, if you want them to be in the same namespace, the proper way to do it is to put all of the code in a namespace.py module file. I know that coming from other languages you might have a desire to have separate files, but that's not Python. (You can however accomplish this with some hacking in the __init__.py file, but I don't recommend it.)

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