importing package and modules from another directory in python
Question: I have a bunch of python scripts in the path

    
    
    /home/yotam/Applications/pyFoo
    

one of them is `__init__.py` which, to my understanding, turns the `pyFoo`
folder into a package. The folder also has a `src` subfolder, which stores an
`__init__.py` file of its own, as well as some other helpful scripts.

I want to import one of the files (modules?), called `Bar.py`, that uses
scripts from `/home/yotam/Applications/pyFoo/src`. If I try to load it from
the python interpreter, while in the folder ''/home/yotam/Applications'' using

    
    
    >>> from pyFoo import Bar as B
    

everything is fine. If, however I want to run it from other folders, e.g. my
home directory, I get the error

    
    
    ValueError: Attempted relative import in non-package
    

How can I import `Bar.py` from anyplace on my machine?


Answer: Just add the directory to your `sys.path`:

    
    
    import sys
    sys.path.append( '/path/to/libs' )
    
    import my_lib_in_another_dir
    

