python import root folder and use all subfolders

Question

With the following dir structure

.
├── setup.py
└── yourpackage
    ├── __init__.py
    ├── some_module.py
    ├── other_module.py
    └── sub_package
        ├── __init__.py
        └── more_modules.py

Is it possible to do this:

>> import yourpackage as yp
>> yp.some_module.bar()
>> yp.sub_package.more_modules.foo()

where the contents of some_module is

def bar(): print('bar')

where the contents of more_modules is

def foo(): print('foo')

I can't seem to get this to work

EDIT: The error I would get in the first case is

Traceback (most recent call last):
  File "<string>", line 1, in <module>
AttributeError: module 'yourpackage' has no attribute 'some_module'

In the second case, it's a similar error, but with more_modules

Answer 1

If you want to use the inner modules without importing them explicitly you have to import them in the __init__.py file:

import some_module
import other_module
import sub_package

and in sub_package/__init__.py:

import more_modules

Note that that might make the first import of the module slower.

Other option is to import them explicitly in your code:

>> import yourpackage.some_module
>> import yourpackage.sub_package.more_modules
>> yourpackage.some_module.bar()
>> yourpackage.sub_package.more_modules.foo()