Setup.py woes: WARNING: '' not a valid package name
Question: For my Python project, I keep my source code in the directory `src`. Thus, for
my project's setup.py script:

    
    
    from setuptools import setup
    
    setup(name='pyIAST',
        ...
        package_dir={'':'src'},
        packages=[''])
    

so that it looks for `src/IAST.py`, where my code resides. e.g. there is a
function `plot_isotherms()` in my `IAST.py` script so the user can, after
installation, call it:

    
    
    import IAST
    IAST.plot_isotherms()
    

Everything works great, but there is an annoying warning when I `python
setup.py install` or use `pip install pyIAST` from PyPi:

    
    
    WARNING: '' not a valid package name; please use only.-separated package names in setup.py
    

How do I make this go away?

My project is [here](https://github.com/CorySimon/pyIAST). I'm also a bit
confused as to why I name my package `pyIAST`, yet the user still types
`import IAST` for my package to import.


Answer: One way to clear that warning is to change your first line to:  
`from setuptools import setup, find_packages`  
and then change your packages line to:  
`packages=find_packages(),`  
The setup install will no longer generate a warning.

You can run the following two commands to see your isotherm method is now
available:  
`import pyiast` #(<==notice this is not IAST)  
`dir(pyiast)`

> `['BETIsotherm', 'InterpolatorIsotherm', 'LangmuirIsotherm',
> 'ModelIsotherm', 'QuadraticIsotherm', 'SipsIsotherm', '_MODELS',
> '_MODEL_PARAMS', '_VERSION', '__author__', '__builtins__', '__doc__',
> '__file__', '__name__', '__package__', 'iast', 'np', 'plot_isotherm',
> 'print_selectivity', 'reverse_iast', 'scipy']`

It can be called using `pyiast.plot_isotherm()`

You may need to update your setuptools. You can check what version you have
with:  
`import setuptools; print "setup version: ", setuptools.__version__`  
Can update it with: `sudo pip install --upgrade setuptools`

