Re: [O] Fwd: run python from org, draft

[Andreas Röhler]

Am 29.03.2013 16:09, schrieb Eric Schulte:
> > > with current
> > >
> > > GNU Emacs 24.3.1 (i686-pc-linux-gnu, GTK+ Version 2.24.14) of 2013-03-05
> > >
> > > Org-mode version 7.9.3f (release_7.9.3f-17-g7524ef @
> > > MY_PATH/emacs-24.3/lisp/org/)
> > >
> > > python from org-source seems completely broken.
> > >
> > > For example:
> > >
> > > #+BEGIN_SRC python
> > > 1+2
> > > #+END_SRC
> > >
> > > #+RESULTS:
> > > : None
> > Weird. With all the testing we did last week, I'm surprised that this is
> > the case with me as well. I'm also getting no results with Org 8.0-pre and
> > Emacs 24.3.1.
>
> Because of quirks of the python language,

or rather the quirks of org-babel? ;)

 when executing outside of a
> session, it is necessary to explicitly specify a return.
>
> For example.
>
>      #+begin_src python
>        return 1+2
>      #+end_src
>
>      #+RESULTS:
>      : 3
>
> or
>
>      #+begin_src python :return x
>        x = 1+2
>      #+end_src
>
>      #+RESULTS:
>      : 3
>
> This is clearly stated in the Python documentation on Worg.
> http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-python.html
>
> Thanks,

IMO org-babel should be able to run source code as is.
If an org-mode specific modification is required at such a trivial form, what 
to expect wrt complex environments?

BTW this fails also:

#+begin_src python
print "Hello, world!"
#+end_src python

#+RESULTS:
: None


Can't see a consistent behavior so far.

Why not follow the path given, which avoids the artistics?


Andreas