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Re: [Orgmode] org-babel: Why isn't =:results value= working with (my) py
From: |
Dan Davison |
Subject: |
Re: [Orgmode] org-babel: Why isn't =:results value= working with (my) python? |
Date: |
Thu, 04 Feb 2010 11:16:43 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) |
"Thomas S. Dye" <address@hidden> writes:
> On Feb 4, 2010, at 5:06 AM, Scott May wrote:
>
>
> Using org-babel, the following example produces no output for me when I
> execute using C-c C-c:
>
> #+begin_src python :results value
> 2 + 2
> #+end_src
>
> #+results:
> : None
>
> In my messages buffer I see the following:
>
> : (Shell command succeeded with no output)
>
> Now the equivalent emacs-lisp example does work:
>
> #+begin_src emacs-lisp :results value
> (+ 2 2)
> #+end_src
>
> #+results:
> : 4
>
> Furthermore,
>
> #+begin_src python :results output
> print(2 + 2)
> #+end_src
>
> #+results:
> : 4
>
> works as expected.
>
> Am I missing something obvious? Is the problem with my python setup, or
> perhaps org-babel-python?
>
> I have tested this on both my Windows and Ubuntu setups. I am using org
> version 6.34trans.
>
> Cheers,
> Scott
>
>
>
> Hi Scott,
>
> You need :session.
Or, if you are going to stick with the default non-session evaluation,
you need to include a return statement:
#+begin_src python :results value
return 2 + 2
#+end_src
#+results:
: 4
This is explained in full at
http://orgmode.org/worg/org-contrib/babel/reference.php#header-argument-results
scroll down to the 2-by-2 table and the explanation below it.
Dan
>
> #+begin_src python :session :results value
> 2 + 2
> #+end_src
>
> #+results:
> : 4
>
> hth,
> Tom
>
>
> Thomas S. Dye, Ph.D.
>
> T. S. Dye & Colleagues, Archaeologists, Inc.
>
> Phone: (808) 529-0866 Fax: (808) 529-0884
>
> http://www.tsdye.com
>
>
>
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