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[O] wrong python version when using :session
From: |
Myles English |
Subject: |
[O] wrong python version when using :session |
Date: |
Mon, 05 Sep 2011 18:28:08 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux) |
Hello,
When a python source block has a :session header argument, the python
version selected does not appear to respect the value of the variable
org-babel-python-command.
Starting emacs with this in the init file (.emacs):
(require 'org-install)
(org-babel-do-load-languages
'org-babel-load-languages
'((python . t) ))
(setq org-babel-python-command "python2")
And in my org file:
#+begin_src python :results output
import sys
print(sys.version)
#+end_src
#+results:
: 2.7.2 (default, Jun 29 2011, 11:10:00)
: [GCC 4.6.1]
Now, exactly the same but with ":session x" header argument:
#+begin_src python :results output :session x
import sys
print(sys.version)
#+end_src
#+results:
:
: 3.2.1 (default, Jul 11 2011, 12:37:47)
: [GCC 4.6.1]
So babel has chosen to use Python 3.2 When I wanted to use Python 2.7,
as in the first block, and the value of org-babel-python-command is
still "python2".
Part of the documentation for the variable python-python-command is:
"Shell command to run Python interpreter". On my system to run the
Python 2.7 interpreter I would do:
$ python2
at the command line so, setting this variable thus:
#+begin_src elisp
(setq python-python-command "python2")
#+end_src
#+results:
: python2
and then using the two examples from above again gives the same
(correct) results for the block without the :session header argument:
#+begin_src python :results output
import sys
print(sys.version)
#+end_src
#+results:
: 2.7.2 (default, Jun 29 2011, 11:10:00)
: [GCC 4.6.1]
but a different error for the block with the session argument:
#+begin_src python :results output :session x
import sys
print(sys.version)
#+end_src
results in the message:
"python-check-version: Only Python versions >= 2.2 and < 3.0 are
supported"
Versions on my system are:
orgmode commit cae9f947be (Aug 30th)
GNU Emacs 23.3.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.22.1) of 2011-03-10
on bitzer.hoetzel.info
$ ls -l `which python{2,3,}`
/usr/bin/python -> python3
/usr/bin/python2 -> python2.7
/usr/bin/python3
Am I doing something wrong or is this a bug? I am wondering if it is
reasonable to expect emacs/orgmode to be able to deal with the fact that I
have Python 3 installed.
Thanks,
Myles
- [O] wrong python version when using :session,
Myles English <=