BUG org-babel-execute-src-block: No org-babel-execute function for python!

BUG org-babel-execute-src-block: No org-babel-execute function for python!

[Andreas Röhler]

[-- Attachment #1: Type: text/plain, Size: 330 bytes --]

org-babel-execute-src-block: No org-babel-execute function for python!

When evaluating the following block C-c C-c starting from emacs -Q

#+BEGIN_SRC python
a = 5

b = 16

print(a + b)
#+END_SRC

the error message from title appears

GNU Emacs 24.3.50.1 (i686-suse-linux-gnu, GTK+ Version 2.22.1) of 2013-02-20

Patch attached.

[-- Attachment #2: org-babel-python-evaluate-external-process_ob-python.el.patch --]
[-- Type: text/x-patch, Size: 615 bytes --]

diff --git a/lisp/ob-python.el b/lisp/ob-python.el
index f2806c7..fb00053 100644
--- a/lisp/ob-python.el
+++ b/lisp/ob-python.el
        (t
 	(error "No function available for running an inferior Python")))
       (setq org-babel-python-buffers
@@ -249,7 +252,8 @@ last statement in BODY, as elisp."
 		    (org-babel-trim body))
 		   "[\r\n]") "\n")
 		 (org-babel-process-file-name tmp-file 'noquote))))
-	      (org-babel-eval-read-file tmp-file))))))
+	      ;; (org-babel-eval-read-file tmp-file)
+	      )))))
 
 (defun org-babel-python-evaluate-session
   (session body &optional result-type result-params)

Re: BUG org-babel-execute-src-block: No org-babel-execute function for python!

[Nick Dokos]

Andreas Röhler <andreas.roehler@easy-emacs.de> wrote:

> org-babel-execute-src-block: No org-babel-execute function for python!
> 
> When evaluating the following block C-c C-c starting from emacs -Q
> 
> #+BEGIN_SRC python
> a = 5
> 
> b = 16
> 
> print(a + b)
> #+END_SRC
> 
> the error message from title appears
> 
> GNU Emacs 24.3.50.1 (i686-suse-linux-gnu, GTK+ Version 2.22.1) of 2013-02-20
> 
> Patch attached.
> diff --git a/lisp/ob-python.el b/lisp/ob-python.el
> index f2806c7..fb00053 100644
> --- a/lisp/ob-python.el
> +++ b/lisp/ob-python.el
>         (t
>  	(error "No function available for running an inferior Python")))
>        (setq org-babel-python-buffers
> @@ -249,7 +252,8 @@ last statement in BODY, as elisp."
>  		    (org-babel-trim body))
>  		   "[\r\n]") "\n")
>  		 (org-babel-process-file-name tmp-file 'noquote))))
> -	      (org-babel-eval-read-file tmp-file))))))
> +	      ;; (org-babel-eval-read-file tmp-file)
> +	      )))))
>  
>  (defun org-babel-python-evaluate-session
>    (session body &optional result-type result-params)

I don't understand: afaict the problem is that starting with emacs -Q, python
is not enabled as a babel language: you need to (require 'ox-python) somewhere.
Maybe I'm missing something but what's this patch supposed to do?

Nick

Re: BUG org-babel-execute-src-block: No org-babel-execute function for python!

[Bastien]

Hi Andreas,

Andreas Röhler <andreas.roehler@easy-emacs.de> writes:

> org-babel-execute-src-block: No org-babel-execute function for python!
>
> When evaluating the following block C-c C-c starting from emacs -Q

You need 

(org-babel-do-load-languages
 'org-babel-load-languages
 '((python . t)))

See (info "(Org)Languages")

HTH,

-- 
 Bastien

Re: BUG org-babel-execute-src-block: No org-babel-execute function for python!

[Andreas Röhler]

Am 26.02.2013 14:49, schrieb Bastien:
> Hi Andreas,
>
> Andreas Röhler <andreas.roehler@easy-emacs.de> writes:
>
>> org-babel-execute-src-block: No org-babel-execute function for python!
>>
>> When evaluating the following block C-c C-c starting from emacs -Q
>
> You need
>
> (org-babel-do-load-languages
>   'org-babel-load-languages
>   '((python . t)))
>
> See (info "(Org)Languages")
>
> HTH,
>

Bugs exists after loading that.
Please tell if you need more info.

Andreas

Re: BUG org-babel-execute-src-block: No org-babel-execute function for python!

[Bastien]

Andreas Röhler <andreas.roehler@easy-emacs.de> writes:

>> (org-babel-do-load-languages
>>   'org-babel-load-languages
>>   '((python . t)))
>>
>> See (info "(Org)Languages")
>>
> Bugs exists after loading that.
> Please tell if you need more info.

Please give a reproducible recipe.

-- 
 Bastien

Re: BUG org-babel-execute-src-block: No org-babel-execute function for python!

[Ista Zahn]

On Tue, Feb 26, 2013 at 10:42 AM, Andreas Röhler
<andreas.roehler@easy-emacs.de> wrote:
> Am 26.02.2013 14:49, schrieb Bastien:
>
>> Hi Andreas,
>>
>> Andreas Röhler <andreas.roehler@easy-emacs.de> writes:
>>
>>> org-babel-execute-src-block: No org-babel-execute function for python!
>>>
>>> When evaluating the following block C-c C-c starting from emacs -Q
>>
>>
>> You need
>>
>> (org-babel-do-load-languages
>>   'org-babel-load-languages
>>   '((python . t)))
>>
>> See (info "(Org)Languages")
>>
>> HTH,
>>
>
> Bugs exists after loading that.

What is the nature of the bugs?

> Please tell if you need more info.

what is the result of 'M-x org-version'?

Also, try this simple test and report the results:
1. start emaces with emacs -q
2. visit a new file with a .org extension, e.g., tmp.org
3. paste this in:
8<--------------------cut here<--------------------8<
Place cursor in the code block below and press C-c C-c

#+begin_src emacs-lisp :exports none
  (org-babel-do-load-languages
   'org-babel-load-languages
   '((python . t)))
#+end_src

#+BEGIN_SRC python :results output
a = 5
b = 16
print(a + b)
#+END_SRC
8<--------------------cut here<--------------------8<
4. place the cursor inside the first code block and press C-c C-c
5. place the cursor inside the second code block and press C-c C-c
6. let us know what happens

Best,
Ista


>
> Andreas
>

Re: BUG org-babel-execute-src-block: No org-babel-execute function for python!

[Andreas Röhler]

Am 26.02.2013 17:00, schrieb Ista Zahn:
> On Tue, Feb 26, 2013 at 10:42 AM, Andreas Röhler
> <andreas.roehler@easy-emacs.de> wrote:
>> Am 26.02.2013 14:49, schrieb Bastien:
>>
>>> Hi Andreas,
>>>
>>> Andreas Röhler <andreas.roehler@easy-emacs.de> writes:
>>>
>>>> org-babel-execute-src-block: No org-babel-execute function for python!
>>>>
>>>> When evaluating the following block C-c C-c starting from emacs -Q
>>>
>>>
>>> You need
>>>
>>> (org-babel-do-load-languages
>>>    'org-babel-load-languages
>>>    '((python . t)))
>>>
>>> See (info "(Org)Languages")
>>>
>>> HTH,
>>>
>>
>> Bugs exists after loading that.
>
> What is the nature of the bugs?
>
>> Please tell if you need more info.
>
> what is the result of 'M-x org-version'?
>
> Also, try this simple test and report the results:
> 1. start emaces with emacs -q
> 2. visit a new file with a .org extension, e.g., tmp.org
> 3. paste this in:
> 8<--------------------cut here<--------------------8<
> Place cursor in the code block below and press C-c C-c
>
> #+begin_src emacs-lisp :exports none
>    (org-babel-do-load-languages
>     'org-babel-load-languages
>     '((python . t)))
> #+end_src
>
> #+BEGIN_SRC python :results output
> a = 5
> b = 16
> print(a + b)
> #+END_SRC
> 8<--------------------cut here<--------------------8<
> 4. place the cursor inside the first code block and press C-c C-c
> 5. place the cursor inside the second code block and press C-c C-c
> 6. let us know what happens
>
> Best,
> Ista
>
>
>>
>> Andreas
>>
>

Hi Ista,

Org-mode version is 7.9.3e (7.9.3e-3-gb07a9b

i.e. loading current trunk.

When following your prescription, bug does not occur.

My from way to load languages was

   (org-babel-do-load-languages
    'org-babel-do-load-languages
    '(
      (sh . t)
      (python . t)
      ))

If I load this first, then your print-example shows error like indicated in subject line.

Something wrong with this code?

Thanks all,

Andreas

Re: BUG org-babel-execute-src-block: No org-babel-execute function for python!

[Thomas S. Dye]

Andreas Röhler <andreas.roehler@easy-emacs.de> writes:

> Hi Ista,
>
> Org-mode version is 7.9.3e (7.9.3e-3-gb07a9b
>
> i.e. loading current trunk.
>
> When following your prescription, bug does not occur.
>
> My from way to load languages was
>
>   (org-babel-do-load-languages
>    'org-babel-do-load-languages
>    '(
>      (sh . t)
>      (python . t)
>      ))
>
> If I load this first, then your print-example shows error like indicated in subject line.
>
> Something wrong with this code?
>

I think it should be 'org-babel-load-languages instead of
'org-babel-do-load-languages. 

Tom

-- 
Thomas S. Dye
http://www.tsdye.com

Re: BUG org-babel-execute-src-block: No org-babel-execute function for python!

[Andreas Röhler]

Am 26.02.2013 20:50, schrieb Thomas S. Dye:
> Andreas Röhler <andreas.roehler@easy-emacs.de> writes:
>
>> Hi Ista,
>>
>> Org-mode version is 7.9.3e (7.9.3e-3-gb07a9b
>>
>> i.e. loading current trunk.
>>
>> When following your prescription, bug does not occur.
>>
>> My from way to load languages was
>>
>>    (org-babel-do-load-languages
>>     'org-babel-do-load-languages
>>     '(
>>       (sh . t)
>>       (python . t)
>>       ))
>>
>> If I load this first, then your print-example shows error like indicated in subject line.
>>
>> Something wrong with this code?
>>
>
> I think it should be 'org-babel-load-languages instead of
> 'org-babel-do-load-languages.
>
> Tom
>

Argh, thanks. Sorry for the noice,

Andreas