From: Soapy Smith <soapy-smith@comcast.net>
To: Christian Moe <mail@christianmoe.com>
Cc: emacs-orgmode@gnu.org, Eric Schulte <schulte.eric@gmail.com>
Subject: Re: Python Code Block error with header option :results output
Date: Sat, 01 Feb 2014 07:34:57 -0500 [thread overview]
Message-ID: <1391258097.11022.7.camel@raven-CM5571> (raw)
In-Reply-To: <m2ioszl3su.fsf@uio.no>
On Sat, 2014-02-01 at 07:56 +0100, Christian Moe wrote:
> > You should only use "return" like that in a python code block when you
> > have ":results value".
>
> To expand briefly on that (since this can be perplexing):
>
> The need to use `return' at all when returning the value is a special
> quirk of Python code blocks, and does not apply to (any?) other languages.
>
> As explained on Worg, with `:results value' (the default),
>
> "Internally, the value is obtained by wrapping the code in a function
> definition in the external language, and evaluating that
> function. Therefore, code should be written as if it were the body of
> such a function. In particular, note that Python does not automatically
> return a value from a function unless a return statement is present, and
> so a ‘return’ statement will usually be required in Python."
>
> http://orgmode.org/manual/Results-of-evaluation.html
>
> So when using `:results output', using `return' causes an error
> because there is no function to return anything from.
>
> Yours,
> Christian
Thank you Christian for the detailed explanation. It is indeed
perplexing at first!
Regards,
Greg
next prev parent reply other threads:[~2014-02-01 12:35 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-31 16:50 Export Dispatcher Insert Template Not Working? Soapy Smith
2014-01-31 17:04 ` Bastien
2014-01-31 21:05 ` Soapy Smith
2014-01-31 21:24 ` Python Code Block error with header option :results output Soapy Smith
2014-01-31 21:33 ` Ahmadou Dicko
2014-01-31 21:33 ` Eric Schulte
2014-02-01 6:56 ` Christian Moe
2014-02-01 12:34 ` Soapy Smith [this message]
2014-01-31 21:45 ` Code block option :results raw does not replace #+RESULTS Soapy Smith
2014-01-31 21:54 ` John Hendy
2014-01-31 23:16 ` Nick Dokos
2014-02-01 12:01 ` Soapy Smith
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.orgmode.org/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1391258097.11022.7.camel@raven-CM5571 \
--to=soapy-smith@comcast.net \
--cc=emacs-orgmode@gnu.org \
--cc=mail@christianmoe.com \
--cc=schulte.eric@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).