import - Where to save python modules -

i'm learning modules in python 3.5. while can install , import packages using sudo pip install {package}, can't seem figure out how import own files.

i made test.py file single definition test. saved site-packages folder. can't seem import there. need understanding how import files.

i read online possibly using sys.path however, don't know how works.

if had following file structure:

/home/foo /home/foo/__init__.py /home/foo/bar.py 

and wanted

import foo.bar foo.bar.somefn() 

i first need do:

import sys sys.path.append("/home/foo") 

notice init.py file, tells python submodules. don't need in instance, it's practice have:

what __init__.py for?

however, since can repetitive, daunting , tough track, there lots of tools available setup code expands have dependencies , lots of files/folders. suggest read bit pip/disttools/easy-install , how make package 'setup.py'.

what setup.py?

in addition, might want explore world of virtual environments , deployment solutions such buildout , anaconda. these keep code separated have several projects on go different needs, or different python builds , platform requirements. when comes time deploy code other machines, you'll have easier time replicating needs of project.

below series of articles info explaining packages, pip , setup.py starting work environment buildout. seems great series:

http://reinout.vanrees.org/weblog/tags/softwarereleasesseries.html

the official docs making setup.py:

https://docs.python.org/3/distutils/setupscript.html