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python is basically up to snuff (needs more work on sessions)
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Eric Schulte
parent
018a8fcb98
commit
1be99d1b35
@ -40,6 +40,7 @@
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;; language specific files
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(require 'org-babel-ruby)
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(require 'org-babel-python)
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(require 'org-babel-shell)
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(require 'org-babel-lisp)
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(require 'org-babel-R)
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136
lisp/org-babel-python.el
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136
lisp/org-babel-python.el
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@ -0,0 +1,136 @@
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;;; org-babel-python.el --- org-babel functions for python
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;; Copyright (C) 2009 Eric Schulte
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;; Author: Eric Schulte
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;; Keywords: literate programming, reproducible research
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;; Homepage: http://orgmode.org
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;; Version: 0.01
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;;; License:
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; Org-Babel support for evaluating python source code.
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;;; Code:
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(require 'org-babel)
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(require 'python)
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(org-babel-add-interpreter "python")
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(defun org-babel-execute:python (body params)
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"Execute a block of Python code with org-babel. This function is
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called by `org-babel-execute-src-block'."
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(message "executing Python source code block")
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(let* ((vars (org-babel-ref-variables params))
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(result-params (split-string (or (cdr (assoc :results params)) "")))
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(result-type (cond ((member "output" result-params) 'output)
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((member "value" result-params) 'value)
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(t 'value)))
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(full-body (concat
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(mapconcat ;; define any variables
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(lambda (pair)
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(format "%s=%s"
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(car pair)
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(org-babel-python-var-to-python (cdr pair))))
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vars "\n") "\n" body "\n")) ;; then the source block body
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(session (org-babel-python-initiate-session (cdr (assoc :session params))))
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(results (org-babel-python-evaluate session full-body result-type)))
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(if (member "scalar" result-params)
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results
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(setq results (case result-type ;; process results based on the result-type
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('output (let ((tmp-file (make-temp-file "org-babel-python")))
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(with-temp-file tmp-file (insert results))
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(org-babel-import-elisp-from-file tmp-file)))
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('value (org-babel-python-table-or-results results))))
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(if (and (member "vector" results) (not (listp results)))
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(list (list results))
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results))))
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(defun org-babel-python-var-to-python (var)
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"Convert an elisp var into a string of python or python source
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code specifying a var of the same value."
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(if (listp var)
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(concat "[" (mapconcat #'org-babel-python-var-to-python var ", ") "]")
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(format "%S" var)))
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(defun org-babel-python-table-or-results (results)
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"If the results look like a table, then convert them into an
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Emacs-lisp table, otherwise return the results as a string."
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(org-babel-read
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(if (string-match "^\\[.+\\]$" results)
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(org-babel-read
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(replace-regexp-in-string
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"\\[" "(" (replace-regexp-in-string
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"\\]" ")" (replace-regexp-in-string
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", " " " (replace-regexp-in-string
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"'" "\"" results)))))
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results)))
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;; functions for comint evaluation
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(defun org-babel-python-initiate-session (&optional session)
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"If there is not a current inferior-process-buffer in SESSION
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then create. Return the initialized session."
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(let ((python-buffer (or session python-buffer)))
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(save-window-excursion (run-python nil session) (current-buffer))))
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(defvar org-babel-python-last-value-eval "_"
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"When evaluated by Python this returns the return value of the last statement.")
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(defvar org-babel-python-eoe-indicator "'org_babel_python_eoe'"
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"Used to indicate that evaluation is has completed.")
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(defun org-babel-python-evaluate (buffer body &optional result-type)
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"Pass BODY to the Python process in BUFFER. If RESULT-TYPE equals
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'output then return a list of the outputs of the statements in
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BODY, if RESULT-TYPE equals 'value then return the value of the
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last statement in BODY."
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(org-babel-comint-in-buffer buffer
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(let ((string-buffer "")
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(full-body (mapconcat #'org-babel-chomp
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(list body org-babel-python-last-value-eval org-babel-python-eoe-indicator) "\n"))
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results)
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(flet ((my-filt (text) (setq string-buffer (concat string-buffer text))))
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;; setup filter
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(add-hook 'comint-output-filter-functions 'my-filt)
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;; pass FULL-BODY to process
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(goto-char (process-mark (get-buffer-process buffer)))
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(insert full-body)
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(comint-send-input)
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;; wait for end-of-evaluation indicator
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(while (progn
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(goto-char comint-last-input-end)
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(not (save-excursion (and (re-search-forward comint-prompt-regexp nil t)
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(re-search-forward (regexp-quote org-babel-python-eoe-indicator) nil t)))))
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(accept-process-output (get-buffer-process buffer)))
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;; remove filter
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(remove-hook 'comint-output-filter-functions 'my-filt))
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;; remove echo'd FULL-BODY from input
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(if (string-match (replace-regexp-in-string "\n" "\r\n" (regexp-quote full-body)) string-buffer)
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(setq string-buffer (substring string-buffer (match-end 0))))
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;; split results with `comint-prompt-regexp'
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(setq results (cdr (member org-babel-python-eoe-indicator
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(reverse (mapcar #'org-babel-trim (split-string string-buffer comint-prompt-regexp))))))
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(org-babel-trim (case result-type
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(output (mapconcat #'identity (reverse (cdr results)) "\n"))
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(value (car results))
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(t (reverse results)))))))
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(provide 'org-babel-python)
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;;; org-babel-python.el ends here
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@ -479,7 +479,6 @@ This should include...
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- sessions in comint buffers
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**** DONE Ruby [5/5]
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- [X] functional results working with comint
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- [X] script results
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- [X] ensure scalar/vector results args are taken into consideration
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@ -549,7 +548,27 @@ twoentyseven + 9
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#+resname: task-R-use-other-output
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: 28
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**** TODO Python
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**** TODO Python [4/5]
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- [X] functional results working with comint
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- [X] script results
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- [X] ensure scalar/vector results args are taken into consideration
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- [X] ensure callable by other source block
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- [ ] rename buffer after session
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#+srcname: task-new-eval-for-python
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#+begin_src python :results silent output scalar
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8
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9
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10
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#+end_src
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#+srcname: task-use-new-eval
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#+begin_src python :var tasking=task-new-eval-for-python() :results replace
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tasking + 2
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#+end_src
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#+resname: task-use-new-eval
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: 12
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**** TODO Shells
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