importing a module in nested packages

Question

This is a python newbie question:

I have the following directory structure:

test
 -- test_file.py
a
 -- b
   -- module.py    

wher

Answer 1

The first thing to do would be to quickly browse the official docs on this.

To make a directory a package, you'll have to add a __init__.py file. This means that you'll have such a file in the a and b directories. Then you can directly do an

import a.b.module

But you'll have to refer to it as a.b.module which is tedious so you can use the as form of the import like so

import a.b.module as mod #shorter name

and refer to it as mod.

Then you can instantiate things inside mod using the regular conventions like mod.shape().

There are a few other subtleties. Please go through the docs for details.