* python :session issues
@ 2013-02-06 2:19 John Kitchin
2013-02-06 15:10 ` Myles English
0 siblings, 1 reply; 6+ messages in thread
From: John Kitchin @ 2013-02-06 2:19 UTC (permalink / raw)
To: emacs-orgmode
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I have been trying to use the :session feature of babel for python code
blocks. I have noticed a few things that might be areas for
improvement. Some issues are related to what I think might be a need for
sanitizing the code blocks and the output.
I am using (insert (org-version)) 7.9.3a
I am using python-mode 5.2 (more modern versions do not work with
:session for me)
The first small detail is illustrated here:
#+BEGIN_SRC python :session
a = 5
b = 6
print a + b
#+END_SRC
#+RESULTS:
:
: >>> >>> >>> 11
In the output, there are three sets of >>>, due to the two empty
lines. Compare this to
#+BEGIN_SRC python :session
a = 5
b = 6
print a + b
#+END_SRC
#+RESULTS:
:
: >>> 11
I think it would be nice to sanitize the python code block sent to the
interpreter to eliminate the empty lines, and avoid the multiple >>> in
output. It would also be nice to have an option to not print those at
all.
The second issue is related. The following code does not work for me in
:session, but it works fine as a standalone block. The issue is related
to the presence of an empty line in the function definition. I like
whitespace like this in functions sometimes for readability.
#+BEGIN_SRC python :session
def func(x):
'doc string'
return x**2
print func(2)
#+END_SRC
#+RESULTS:
:
: ... >>> File "<stdin>", line 1
: return x**2
: ^
: IndentationError: unexpected indent
: >>> None
Removing the blank line works fine, but still has some non-pretty
output.
#+BEGIN_SRC python :session
def func(x):
'doc string'
return x**2
print func(2)
#+END_SRC
#+RESULTS:
:
: ... ... >>> 4
One of the ellipsis is due to the doc string.
#+BEGIN_SRC python :session
def func(x):
return x**2
print func(2)
#+END_SRC
#+RESULTS:
:
: ... >>> 4
Interestingly, this did not work, because there is no empty line after
the function definition. So, sanitizing could be tricky.
#+BEGIN_SRC python :session
def func(x):
'doc string'
return x**2
print func(2)
#+END_SRC
#+RESULTS:
:
: ... ... File "<stdin>", line 4
: print func(2)
: ^
: SyntaxError: invalid syntax
I think if there was a way to strip all the empty lines from the input,
it would go a long way to making the output look like what I think most
people would expect and want.
Anyway, those are the examples I wanted to highlight in this
post.
1. Do you see similar behavior, or is this a feature of my setup?
2. Is there any interest in sanitizing the input and output of a
python :session to get prettier output? if so, Any hints on where to start
with that?
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
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: python :session issues
2013-02-06 2:19 python :session issues John Kitchin
@ 2013-02-06 15:10 ` Myles English
2013-02-06 15:17 ` John Kitchin
0 siblings, 1 reply; 6+ messages in thread
From: Myles English @ 2013-02-06 15:10 UTC (permalink / raw)
To: John Kitchin; +Cc: emacs-orgmode
Hi John,
John Kitchin writes:
> I have been trying to use the :session feature of babel for python code
> blocks. I have noticed a few things that might be areas for
> improvement. Some issues are related to what I think might be a need for
> sanitizing the code blocks and the output.
>
> I am using (insert (org-version)) 7.9.3a
> I am using python-mode 5.2 (more modern versions do not work with
> :session for me)
>
> The first small detail is illustrated here:
>
> #+BEGIN_SRC python :session
> a = 5
>
> b = 6
>
> print a + b
> #+END_SRC
>
> #+RESULTS:
> :
> : >>> >>> >>> 11
>
> In the output, there are three sets of >>>, due to the two empty
> lines. Compare this to
>
> #+BEGIN_SRC python :session
> a = 5
> b = 6
> print a + b
> #+END_SRC
>
> #+RESULTS:
> :
> : >>> 11
>
> I think it would be nice to sanitize the python code block sent to the
> interpreter to eliminate the empty lines, and avoid the multiple >>> in
> output. It would also be nice to have an option to not print those at
> all.
>
> The second issue is related. The following code does not work for me in
> :session, but it works fine as a standalone block. The issue is related
> to the presence of an empty line in the function definition. I like
> whitespace like this in functions sometimes for readability.
>
> #+BEGIN_SRC python :session
> def func(x):
> 'doc string'
>
> return x**2
>
> print func(2)
> #+END_SRC
>
> #+RESULTS:
> :
> : ... >>> File "<stdin>", line 1
> : return x**2
> : ^
> : IndentationError: unexpected indent
> : >>> None
>
> Removing the blank line works fine, but still has some non-pretty
> output.
>
> #+BEGIN_SRC python :session
> def func(x):
> 'doc string'
> return x**2
>
> print func(2)
> #+END_SRC
>
> #+RESULTS:
> :
> : ... ... >>> 4
>
> One of the ellipsis is due to the doc string.
> #+BEGIN_SRC python :session
> def func(x):
> return x**2
>
> print func(2)
> #+END_SRC
>
> #+RESULTS:
> :
> : ... >>> 4
>
> Interestingly, this did not work, because there is no empty line after
> the function definition. So, sanitizing could be tricky.
>
> #+BEGIN_SRC python :session
> def func(x):
> 'doc string'
> return x**2
> print func(2)
> #+END_SRC
>
> #+RESULTS:
> :
> : ... ... File "<stdin>", line 4
> : print func(2)
> : ^
> : SyntaxError: invalid syntax
>
> I think if there was a way to strip all the empty lines from the input,
> it would go a long way to making the output look like what I think most
> people would expect and want.
>
> Anyway, those are the examples I wanted to highlight in this
> post.
>
>
> 1. Do you see similar behavior, or is this a feature of my setup?
I haven't tried your examples (no time) but you would be able to tell if
it was a feature of your setup by making a minimum working example and
starting emacs with 'emacs -Q'. If you see the thread in the footnote
it contains such an example.
> 2. Is there any interest in sanitizing the input and output of a
> python :session to get prettier output? if so, Any hints on where to
> start with that?
I had some problems recently with :session, there was a short discussion[1],
and last I heard the maintainer of python-mode.el is looking into it.
Myles
Footnotes:
[1] https://lists.gnu.org/archive/html/emacs-orgmode/2013-01/msg00888.html
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: python :session issues
2013-02-06 15:10 ` Myles English
@ 2013-02-06 15:17 ` John Kitchin
2013-02-07 16:54 ` Andreas Röhler
0 siblings, 1 reply; 6+ messages in thread
From: John Kitchin @ 2013-02-06 15:17 UTC (permalink / raw)
To: Myles English; +Cc: emacs-orgmode
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Thanks for the -Q reminder. I get the same output if I run with emacs -Q
(although I do have to add :results output to each block. I had that set as
a default in my init files).
I had the problem described in the footnote you listed, and that is why I
am using python-mode 5.2, which doesn't have that issue.
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
On Wed, Feb 6, 2013 at 10:10 AM, Myles English <mylesenglish@gmail.com>wrote:
>
> Hi John,
>
> John Kitchin writes:
>
> > I have been trying to use the :session feature of babel for python code
> > blocks. I have noticed a few things that might be areas for
> > improvement. Some issues are related to what I think might be a need for
> > sanitizing the code blocks and the output.
> >
> > I am using (insert (org-version)) 7.9.3a
> > I am using python-mode 5.2 (more modern versions do not work with
> > :session for me)
> >
> > The first small detail is illustrated here:
> >
> > #+BEGIN_SRC python :session
> > a = 5
> >
> > b = 6
> >
> > print a + b
> > #+END_SRC
> >
> > #+RESULTS:
> > :
> > : >>> >>> >>> 11
> >
> > In the output, there are three sets of >>>, due to the two empty
> > lines. Compare this to
> >
> > #+BEGIN_SRC python :session
> > a = 5
> > b = 6
> > print a + b
> > #+END_SRC
> >
> > #+RESULTS:
> > :
> > : >>> 11
> >
> > I think it would be nice to sanitize the python code block sent to the
> > interpreter to eliminate the empty lines, and avoid the multiple >>> in
> > output. It would also be nice to have an option to not print those at
> > all.
> >
> > The second issue is related. The following code does not work for me in
> > :session, but it works fine as a standalone block. The issue is related
> > to the presence of an empty line in the function definition. I like
> > whitespace like this in functions sometimes for readability.
> >
> > #+BEGIN_SRC python :session
> > def func(x):
> > 'doc string'
> >
> > return x**2
> >
> > print func(2)
> > #+END_SRC
> >
> > #+RESULTS:
> > :
> > : ... >>> File "<stdin>", line 1
> > : return x**2
> > : ^
> > : IndentationError: unexpected indent
> > : >>> None
> >
> > Removing the blank line works fine, but still has some non-pretty
> > output.
> >
> > #+BEGIN_SRC python :session
> > def func(x):
> > 'doc string'
> > return x**2
> >
> > print func(2)
> > #+END_SRC
> >
> > #+RESULTS:
> > :
> > : ... ... >>> 4
> >
> > One of the ellipsis is due to the doc string.
> > #+BEGIN_SRC python :session
> > def func(x):
> > return x**2
> >
> > print func(2)
> > #+END_SRC
> >
> > #+RESULTS:
> > :
> > : ... >>> 4
> >
> > Interestingly, this did not work, because there is no empty line after
> > the function definition. So, sanitizing could be tricky.
> >
> > #+BEGIN_SRC python :session
> > def func(x):
> > 'doc string'
> > return x**2
> > print func(2)
> > #+END_SRC
> >
> > #+RESULTS:
> > :
> > : ... ... File "<stdin>", line 4
> > : print func(2)
> > : ^
> > : SyntaxError: invalid syntax
> >
> > I think if there was a way to strip all the empty lines from the input,
> > it would go a long way to making the output look like what I think most
> > people would expect and want.
> >
> > Anyway, those are the examples I wanted to highlight in this
> > post.
> >
> >
> > 1. Do you see similar behavior, or is this a feature of my setup?
>
> I haven't tried your examples (no time) but you would be able to tell if
> it was a feature of your setup by making a minimum working example and
> starting emacs with 'emacs -Q'. If you see the thread in the footnote
> it contains such an example.
>
> > 2. Is there any interest in sanitizing the input and output of a
> > python :session to get prettier output? if so, Any hints on where to
> > start with that?
>
> I had some problems recently with :session, there was a short
> discussion[1],
> and last I heard the maintainer of python-mode.el is looking into it.
>
> Myles
>
> Footnotes:
> [1]
> https://lists.gnu.org/archive/html/emacs-orgmode/2013-01/msg00888.html
>
>
>
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: python :session issues
2013-02-06 15:17 ` John Kitchin
@ 2013-02-07 16:54 ` Andreas Röhler
2013-02-07 21:53 ` Myles English
0 siblings, 1 reply; 6+ messages in thread
From: Andreas Röhler @ 2013-02-07 16:54 UTC (permalink / raw)
To: emacs-orgmode
Am 06.02.2013 16:17, schrieb John Kitchin:
> Thanks for the -Q reminder. I get the same output if I run with emacs -Q
> (although I do have to add :results output to each block. I had that set as
> a default in my init files).
>
> I had the problem described in the footnote you listed, and that is why I
> am using python-mode 5.2, which doesn't have that issue.
>
> John
Should be fixed in current trunk.
bzr branch lp:python-mode
Andreas
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: python :session issues
2013-02-07 16:54 ` Andreas Röhler
@ 2013-02-07 21:53 ` Myles English
2013-02-08 9:23 ` Andreas Röhler
0 siblings, 1 reply; 6+ messages in thread
From: Myles English @ 2013-02-07 21:53 UTC (permalink / raw)
To: Andreas Röhler; +Cc: emacs-orgmode
Hi Andreas,
Andreas Röhler writes:
> Am 06.02.2013 16:17, schrieb John Kitchin:
>> Thanks for the -Q reminder. I get the same output if I run with emacs -Q
>> (although I do have to add :results output to each block. I had that set as
>> a default in my init files).
>>
>> I had the problem described in the footnote you listed, and that is why I
>> am using python-mode 5.2, which doesn't have that issue.
>>
>> John
>
>
> Should be fixed in current trunk.
>
> bzr branch lp:python-mode
Thanks for looking at this Andreas, I have tried the bzr trunk and still
have problems.
John, I hope I am not hijacking your thread but I am not sure what
problem is meant to be have been fixed above so I am just jumping in and
assuming that we would both like to fix the same thing.
Using org-mode from git, commit b810431 from Jan 22.
If I start emacs like this:
$ emacs -Q testPy.org -l init.el
then executing the src blocks in order, *restarting Emacs between
attempts*, shows the problems.
-----/ init.el /------------------------------------------
;; use the git trunk for org mode
(add-to-list 'load-path "~/.emacs.d/plugins/org-mode/lisp")
(add-to-list 'load-path "~/.emacs.d/plugins/org-mode/contrib/lisp" t)
(require 'org)
;; use the bzr trunk for python-mode
(setq py-install-directory "/home/myles/.emacs.d/plugins/python-mode")
(add-to-list 'load-path py-install-directory)
(require 'python-mode)
(org-babel-do-load-languages
'org-babel-load-languages
'((python . t)))
---------------------------------------/ end init.el /-------
-----/ testPy.org /------------------------------------------
* First attempt :doesnotwork:
#+begin_src python :results output :session a
import sys
#+end_src
Message:
inferior-python-mode: Wrong type argument: keymapp, py-down-exception
* Second attempt: set org-babel-python-mode first :doesnotwork:
#+begin_src elisp
(setq org-babel-python-mode 'python-mode)
(setq org-babel-python-command "python2"
py-python-command "python2")
#+end_src
I would expect this to open a Python 2 session, however it opens a
Python 3 session:
#+begin_src python :results output :session a
import sys
print(sys.path)
#+end_src
* Third attempt: try python3 :works:
#+begin_src elisp
(setq org-babel-python-mode 'python-mode)
(setq org-babel-python-command "python3"
py-python-command "python3")
#+end_src
#+begin_src python :results output :session a
import sys
print(sys.path)
#+end_src
Works ok.
---------------------------------------/ end testPy.org /-------
Perhaps I am not using it correctly?
Thanks,
Myles
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: python :session issues
2013-02-07 21:53 ` Myles English
@ 2013-02-08 9:23 ` Andreas Röhler
0 siblings, 0 replies; 6+ messages in thread
From: Andreas Röhler @ 2013-02-08 9:23 UTC (permalink / raw)
To: Myles English; +Cc: emacs-orgmode
Am 07.02.2013 22:53, schrieb Myles English:
>
> Hi Andreas,
>
> Andreas Röhler writes:
>
>> Am 06.02.2013 16:17, schrieb John Kitchin:
>>> Thanks for the -Q reminder. I get the same output if I run with emacs -Q
>>> (although I do have to add :results output to each block. I had that set as
>>> a default in my init files).
>>>
>>> I had the problem described in the footnote you listed, and that is why I
>>> am using python-mode 5.2, which doesn't have that issue.
>>>
>>> John
>>
>>
>> Should be fixed in current trunk.
>>
>> bzr branch lp:python-mode
>
> Thanks for looking at this Andreas, I have tried the bzr trunk and still
> have problems.
>
> John, I hope I am not hijacking your thread but I am not sure what
> problem is meant to be have been fixed above so I am just jumping in and
> assuming that we would both like to fix the same thing.
>
> Using org-mode from git, commit b810431 from Jan 22.
>
> If I start emacs like this:
>
> $ emacs -Q testPy.org -l init.el
>
> then executing the src blocks in order, *restarting Emacs between
> attempts*, shows the problems.
>
> -----/ init.el /------------------------------------------
> ;; use the git trunk for org mode
> (add-to-list 'load-path "~/.emacs.d/plugins/org-mode/lisp")
> (add-to-list 'load-path "~/.emacs.d/plugins/org-mode/contrib/lisp" t)
> (require 'org)
>
> ;; use the bzr trunk for python-mode
> (setq py-install-directory "/home/myles/.emacs.d/plugins/python-mode")
> (add-to-list 'load-path py-install-directory)
> (require 'python-mode)
>
> (org-babel-do-load-languages
> 'org-babel-load-languages
> '((python . t)))
> ---------------------------------------/ end init.el /-------
>
> -----/ testPy.org /------------------------------------------
> * First attempt :doesnotwork:
>
> #+begin_src python :results output :session a
> import sys
> #+end_src
>
> Message:
>
> inferior-python-mode: Wrong type argument: keymapp, py-down-exception
>
> * Second attempt: set org-babel-python-mode first :doesnotwork:
>
> #+begin_src elisp
> (setq org-babel-python-mode 'python-mode)
> (setq org-babel-python-command "python2"
> py-python-command "python2")
> #+end_src
>
> I would expect this to open a Python 2 session, however it opens a
> Python 3 session:
>
> #+begin_src python :results output :session a
> import sys
> print(sys.path)
> #+end_src
>
> * Third attempt: try python3 :works:
>
> #+begin_src elisp
> (setq org-babel-python-mode 'python-mode)
> (setq org-babel-python-command "python3"
> py-python-command "python3")
> #+end_src
>
> #+begin_src python :results output :session a
> import sys
> print(sys.path)
> #+end_src
>
> Works ok.
> ---------------------------------------/ end testPy.org /-------
>
> Perhaps I am not using it correctly?
>
> Thanks,
>
> Myles
>
https://bugs.launchpad.net/python-mode/+bug/1119201
Will look into, when 6.1.1 is released.
Cheers,
Andreas
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-02-08 9:23 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-02-06 2:19 python :session issues John Kitchin
2013-02-06 15:10 ` Myles English
2013-02-06 15:17 ` John Kitchin
2013-02-07 16:54 ` Andreas Röhler
2013-02-07 21:53 ` Myles English
2013-02-08 9:23 ` Andreas Röhler
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