access eggs in python?
Question: Is there any way to call an installed python egg from python code? I need to
cal a sphinx documentation generator from within a python code, and currently
i'm doing it like this:

`os.system( "sphinx-build.exe -b html c:\\src c:\\dst" )`

This works, but requires some additional configuration: 'scripts' folder
inside a python installation folder need to be added to a system PATH ( i'm on
Windows ). Is it any better, native way to call an installed python egg?


Answer: So basically, you want to use Sphinx as a library?

Here is what `sphinx-build` does:

    
    
    from pkg_resources import load_entry_point
    
    load_entry_point('Sphinx==0.5.1', 'console_scripts', 'sphinx-build')()
    

Looking at `entry-points.txt` in the EGG-INFO directory, notice that the
sphinx-build entry point is the `sphinx.main` function (located in
`__init__.py`).

Have a look at that and duplicate what it does, and you can use sphinx as a
library. I have not looked at the code in detail, but it seems that the bulk
of the `sphinx-build`-command is done by the `build` method on a `Sphinx`
object.

In your code, you would have to do something like:

    
    
    from sphinx.application import Sphinx
    s = Sphinx(...)
    s.build(...)
    

You need to have a look at the Sphinx source code to figure out the parameters
to `Sphinx.__init__()` and `Sphinx.build()`

