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From: =?ISO-8859-15?Q?Andreas_R=F6hler?= <andreas.roehler@easy-emacs.de>
Subject: Re: Fwd: run python from org, draft
Date: Fri, 29 Mar 2013 16:29:10 +0100
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To: Eric Schulte <schulte.eric@gmail.com>
Cc: emacs-orgmode <emacs-orgmode@gnu.org>, Gary Oberbrunner <garyo@oberbrunner.com>

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