Re: setting options to python interpreter for a code block

[Eric Schulte <schulte.eric@gmail.com>]

You could try setting org-babel-python-command to "python -m sandbox".

If that doesn't work we could add a cmdline header argument to python
code blocks pretty easily.

Cheers,

John Kitchin <jkitchin@andrew.cmu.edu> writes:

> Hi,
> I am looking at a new strategy to capture stderr and exceptions in python
> code blocks. Right now exceptions are not captured in the output, and
> neither is stderr.
>
> I made a little sandbox module that captures stdout, stderr, and exceptions
> and then prints them all to stdout with some minor formatting. Here is an
> example.
>
> Say test.py has this content
>
> #+BEGIN_SRC python
> print 'hello'
>
> print 4 + 6
>
> import sys
>
> print >>sys.stderr, 'message to stderr'
>
>
> raise Exception('baboom')
> #+END_SRC
>
> When I use the sandbox, I get all the output on stdout like this.
>
> #+BEGIN_SRC sh
> python -m sandbox < test.py
> # or cat test.py | python -m sandbox
> #+END_SRC
>
> #+RESULTS:
> #+begin_example
>
> --------------------------------------------------------------
> hello
> 10
>
>
> --------------------------------------------------------------
> stderr:
> message to stderr
>
>
> --------------------------------------------------------------
> Traceback (most recent call last):
>   File "/home/jkitchin/Dropbox/pycse/pycse/sandbox/sandbox.py", line 16, in
> <module>
>     exec(content, ns_globals, ns_locals)
>   File "<string>", line 10, in <module>
> Exception: baboom
>
>
> #+end_example
>
>
> So, I was wondering how to get this to happen in org-mode on a regular
> python block. I think it could work if I could define a custom interpreter
> for a particular block, e.g. python-sandbox that takes the codeblock on
> stdin.
>
> Is there some other way that I could do this? Thanks!
>
> John
>
> -----------------------------------
> John Kitchin
> Associate Professor
> Doherty Hall A207F
> Department of Chemical Engineering
> Carnegie Mellon University
> Pittsburgh, PA 15213
> 412-268-7803
> http://kitchingroup.cheme.cmu.edu

-- 
Eric Schulte
https://cs.unm.edu/~eschulte
PGP: 0x614CA05D