From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dan Davison <davison@stats.ox.ac.uk>
Subject: Re: What is output for org-babel?
Date: Sun, 08 Nov 2009 15:20:41 -0500
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To: Darlan Cavalcante Moreira <darcamo@gmail.com>
Cc: emacs-orgmode@gnu.org, andrea Crotti <andrea.crotti.0@gmail.com>

Darlan Cavalcante Moreira <darcamo@gmail.com> writes:

> COmments are inline.
>
> At Thu, 5 Nov 2009 11:17:39 +0000 (UTC),
> andrea Crotti <andrea.crotti.0@gmail.com> wrote:
>> 
>> I'm with org-mode 6.31a, I was trying to
>> get output in the exported files but I never see the output.
>> 
>> So I investigate and for example this
>> 
>> #+BEGIN_SRC python
>> import os; os.listdir(os.getcwd())
>> #+END_SRC
>
> This does not return anything for me either, but
> #+BEGIN_SRC python
> import os
> os.listdir(os.getcwd())
> #+END_SRC
> works as expected. This is strange, since "import os; os.listdir(os.getcwd())"
> is valid and will work if typed in the python interpreter directly.

This is a limitation of the current implementation of :results value
evaluation. For now, while we work out a good solution, semi-colon
separated statements on the same line (as well as multiline
continuations) should be avoided when using :results value (the
default). It does work with :results output:

#+BEGIN_SRC python :results output
import os; print os.listdir(os.getcwd())
#+END_SRC

Thanks for pointing this problem out.

Dan