2009-06-12 16:24:03 +00:00
|
|
|
;;; org-babel-python.el --- org-babel functions for python evaluation
|
2009-06-12 15:46:00 +00:00
|
|
|
|
|
|
|
;; Copyright (C) 2009 Eric Schulte
|
|
|
|
|
|
|
|
;; Author: Eric Schulte
|
|
|
|
;; Keywords: literate programming, reproducible research
|
|
|
|
;; Homepage: http://orgmode.org
|
|
|
|
;; Version: 0.01
|
|
|
|
|
|
|
|
;;; License:
|
|
|
|
|
|
|
|
;; This program is free software; you can redistribute it and/or modify
|
|
|
|
;; it under the terms of the GNU General Public License as published by
|
|
|
|
;; the Free Software Foundation; either version 3, or (at your option)
|
|
|
|
;; any later version.
|
|
|
|
;;
|
|
|
|
;; This program is distributed in the hope that it will be useful,
|
|
|
|
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
;; GNU General Public License for more details.
|
|
|
|
;;
|
|
|
|
;; You should have received a copy of the GNU General Public License
|
|
|
|
;; along with GNU Emacs; see the file COPYING. If not, write to the
|
|
|
|
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
|
|
;; Boston, MA 02110-1301, USA.
|
|
|
|
|
|
|
|
;;; Commentary:
|
|
|
|
|
|
|
|
;; Org-Babel support for evaluating python source code.
|
|
|
|
|
|
|
|
;;; Code:
|
|
|
|
(require 'org-babel)
|
|
|
|
(require 'python)
|
|
|
|
|
|
|
|
(org-babel-add-interpreter "python")
|
|
|
|
|
|
|
|
(defun org-babel-execute:python (body params)
|
|
|
|
"Execute a block of Python code with org-babel. This function is
|
|
|
|
called by `org-babel-execute-src-block'."
|
|
|
|
(message "executing Python source code block")
|
|
|
|
(let* ((vars (org-babel-ref-variables params))
|
|
|
|
(result-params (split-string (or (cdr (assoc :results params)) "")))
|
|
|
|
(result-type (cond ((member "output" result-params) 'output)
|
|
|
|
((member "value" result-params) 'value)
|
|
|
|
(t 'value)))
|
|
|
|
(full-body (concat
|
|
|
|
(mapconcat ;; define any variables
|
|
|
|
(lambda (pair)
|
|
|
|
(format "%s=%s"
|
|
|
|
(car pair)
|
|
|
|
(org-babel-python-var-to-python (cdr pair))))
|
2009-06-12 21:48:40 +00:00
|
|
|
vars "\n") "\n" (org-babel-trim body) "\n")) ;; then the source block body
|
2009-06-12 15:46:00 +00:00
|
|
|
(session (org-babel-python-initiate-session (cdr (assoc :session params))))
|
2009-06-12 21:48:40 +00:00
|
|
|
(results (org-babel-python-evaluate (org-babel-python-session-buffer session) full-body result-type)))
|
2009-06-12 15:46:00 +00:00
|
|
|
(if (member "scalar" result-params)
|
|
|
|
results
|
|
|
|
(setq results (case result-type ;; process results based on the result-type
|
|
|
|
('output (let ((tmp-file (make-temp-file "org-babel-python")))
|
|
|
|
(with-temp-file tmp-file (insert results))
|
|
|
|
(org-babel-import-elisp-from-file tmp-file)))
|
|
|
|
('value (org-babel-python-table-or-results results))))
|
|
|
|
(if (and (member "vector" results) (not (listp results)))
|
|
|
|
(list (list results))
|
|
|
|
results))))
|
|
|
|
|
|
|
|
(defun org-babel-python-var-to-python (var)
|
2009-06-12 16:24:03 +00:00
|
|
|
"Convert an elisp var into a string of python source code
|
|
|
|
specifying a var of the same value."
|
2009-06-12 15:46:00 +00:00
|
|
|
(if (listp var)
|
|
|
|
(concat "[" (mapconcat #'org-babel-python-var-to-python var ", ") "]")
|
|
|
|
(format "%S" var)))
|
|
|
|
|
|
|
|
(defun org-babel-python-table-or-results (results)
|
|
|
|
"If the results look like a table, then convert them into an
|
|
|
|
Emacs-lisp table, otherwise return the results as a string."
|
|
|
|
(org-babel-read
|
|
|
|
(if (string-match "^\\[.+\\]$" results)
|
|
|
|
(org-babel-read
|
|
|
|
(replace-regexp-in-string
|
|
|
|
"\\[" "(" (replace-regexp-in-string
|
|
|
|
"\\]" ")" (replace-regexp-in-string
|
|
|
|
", " " " (replace-regexp-in-string
|
|
|
|
"'" "\"" results)))))
|
|
|
|
results)))
|
|
|
|
|
|
|
|
;; functions for comint evaluation
|
|
|
|
|
2009-06-12 21:48:40 +00:00
|
|
|
(defvar org-babel-python-buffers '(:default . nil))
|
|
|
|
|
|
|
|
(defun org-babel-python-session-buffer (session)
|
|
|
|
(cdr (assoc session org-babel-python-buffers)))
|
|
|
|
|
2009-06-12 15:46:00 +00:00
|
|
|
(defun org-babel-python-initiate-session (&optional session)
|
|
|
|
"If there is not a current inferior-process-buffer in SESSION
|
|
|
|
then create. Return the initialized session."
|
2009-06-12 21:48:40 +00:00
|
|
|
(save-window-excursion
|
|
|
|
(let* ((session (if session (intern session) :default))
|
|
|
|
(python-buffer (org-babel-python-session-buffer session)))
|
|
|
|
(run-python)
|
|
|
|
(setq org-babel-python-buffers (cons (cons session python-buffer) (assq-delete-all session org-babel-python-buffers)))
|
|
|
|
session)))
|
2009-06-12 15:46:00 +00:00
|
|
|
|
|
|
|
(defvar org-babel-python-last-value-eval "_"
|
|
|
|
"When evaluated by Python this returns the return value of the last statement.")
|
|
|
|
(defvar org-babel-python-eoe-indicator "'org_babel_python_eoe'"
|
|
|
|
"Used to indicate that evaluation is has completed.")
|
|
|
|
|
|
|
|
(defun org-babel-python-evaluate (buffer body &optional result-type)
|
|
|
|
"Pass BODY to the Python process in BUFFER. If RESULT-TYPE equals
|
|
|
|
'output then return a list of the outputs of the statements in
|
|
|
|
BODY, if RESULT-TYPE equals 'value then return the value of the
|
|
|
|
last statement in BODY."
|
|
|
|
(org-babel-comint-in-buffer buffer
|
|
|
|
(let ((string-buffer "")
|
2009-06-12 21:48:40 +00:00
|
|
|
(full-body (mapconcat #'org-babel-trim
|
2009-06-12 15:46:00 +00:00
|
|
|
(list body org-babel-python-last-value-eval org-babel-python-eoe-indicator) "\n"))
|
|
|
|
results)
|
|
|
|
(flet ((my-filt (text) (setq string-buffer (concat string-buffer text))))
|
|
|
|
;; setup filter
|
|
|
|
(add-hook 'comint-output-filter-functions 'my-filt)
|
|
|
|
;; pass FULL-BODY to process
|
|
|
|
(goto-char (process-mark (get-buffer-process buffer)))
|
2009-06-12 21:48:40 +00:00
|
|
|
;; for some reason python is fussy, and likes enters after every input
|
|
|
|
(mapc (lambda (statement) (insert statement) (comint-send-input))
|
|
|
|
(split-string full-body "[\r\n]+"))
|
2009-06-12 15:46:00 +00:00
|
|
|
(comint-send-input)
|
|
|
|
;; wait for end-of-evaluation indicator
|
|
|
|
(while (progn
|
|
|
|
(goto-char comint-last-input-end)
|
|
|
|
(not (save-excursion (and (re-search-forward comint-prompt-regexp nil t)
|
|
|
|
(re-search-forward (regexp-quote org-babel-python-eoe-indicator) nil t)))))
|
|
|
|
(accept-process-output (get-buffer-process buffer)))
|
|
|
|
;; remove filter
|
|
|
|
(remove-hook 'comint-output-filter-functions 'my-filt))
|
|
|
|
;; remove echo'd FULL-BODY from input
|
|
|
|
(if (string-match (replace-regexp-in-string "\n" "\r\n" (regexp-quote full-body)) string-buffer)
|
|
|
|
(setq string-buffer (substring string-buffer (match-end 0))))
|
|
|
|
;; split results with `comint-prompt-regexp'
|
2009-06-12 21:48:40 +00:00
|
|
|
(setq results (delete org-babel-python-eoe-indicator
|
|
|
|
(cdr (member org-babel-python-eoe-indicator
|
2009-06-12 23:23:28 +00:00
|
|
|
(reverse (mapcar #'org-babel-trim
|
|
|
|
(split-string string-buffer comint-prompt-regexp)))))))
|
|
|
|
(setq results (mapcar #'org-babel-python-read-string results))
|
2009-06-12 15:46:00 +00:00
|
|
|
(org-babel-trim (case result-type
|
|
|
|
(output (mapconcat #'identity (reverse (cdr results)) "\n"))
|
|
|
|
(value (car results))
|
|
|
|
(t (reverse results)))))))
|
|
|
|
|
2009-06-12 23:23:28 +00:00
|
|
|
(defun org-babel-python-read-string (string)
|
|
|
|
"Strip 's from around ruby string"
|
|
|
|
(if (string-match "'\\([^\000]+\\)'" string)
|
|
|
|
(match-string 1 string)
|
|
|
|
string))
|
|
|
|
|
2009-06-12 15:46:00 +00:00
|
|
|
(provide 'org-babel-python)
|
|
|
|
;;; org-babel-python.el ends here
|