emacs-orgmode@gnu.org archives
 help / color / mirror / code / Atom feed
blob 1b3b8920478a97aafaec9ea12949d4842bdca841 11204 bytes (raw)
name: lisp/ob-python.el 	 # note: path name is non-authoritative(*)

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
 
;;; ob-python.el --- org-babel functions for python evaluation

;; Copyright (C) 2009-2013 Free Software Foundation, Inc.

;; Authors: Eric Schulte
;;	 Dan Davison
;; Keywords: literate programming, reproducible research
;; Homepage: http://orgmode.org

;; This file is part of GNU Emacs.

;; GNU Emacs 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 of the License, or
;; (at your option) any later version.

;; GNU Emacs 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.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;; Org-Babel support for evaluating python source code.

;;; Code:
(require 'ob)
(eval-when-compile (require 'cl))

(declare-function org-remove-indentation "org" )
(declare-function py-shell "ext:python-mode" (&optional argprompt))
(declare-function py-toggle-shells "ext:python-mode" (arg))
(declare-function run-python "ext:python" (&optional cmd noshow new))

(defvar org-babel-tangle-lang-exts)
(add-to-list 'org-babel-tangle-lang-exts '("python" . "py"))

(defvar org-babel-default-header-args:python '())

(defvar org-babel-python-command "python"
  "Name of the command for executing Python code.")

(defvar org-babel-python-mode (if (featurep 'python-mode) 'python-mode 'python)
  "Preferred python mode for use in running python interactively.
This will typically be either 'python or 'python-mode.")

(defvar org-src-preserve-indentation)

(defcustom org-babel-python-hline-to "None"
  "Replace hlines in incoming tables with this when translating to python."
  :group 'org-babel
  :type 'string)

(defcustom org-babel-python-None-to 'hline
  "Replace 'None' in python tables with this before returning."
  :group 'org-babel
  :type 'string)

(defun org-babel-execute:python (body params)
  "Execute a block of Python code with Babel.
This function is called by `org-babel-execute-src-block'."
  (let* ((session (org-babel-python-initiate-session
		   (cdr (assoc :session params))))
         (result-params (cdr (assoc :result-params params)))
         (result-type (cdr (assoc :result-type params)))
	 (return-val (when (and (eq result-type 'value) (not session))
		       (cdr (assoc :return params))))
	 (preamble (cdr (assoc :preamble params)))
         (full-body
	  (org-babel-expand-body:generic
	   (concat body (if return-val (format "\nreturn %s" return-val) ""))
	   params (org-babel-variable-assignments:python params)))
         (result (org-babel-python-evaluate
		  session full-body result-type result-params preamble)))
    (org-babel-reassemble-table
     result
     (org-babel-pick-name (cdr (assoc :colname-names params))
			  (cdr (assoc :colnames params)))
     (org-babel-pick-name (cdr (assoc :rowname-names params))
			  (cdr (assoc :rownames params))))))

(defun org-babel-prep-session:python (session params)
  "Prepare SESSION according to the header arguments in PARAMS.
VARS contains resolved variable references"
  (let* ((session (org-babel-python-initiate-session session))
	 (var-lines
	  (org-babel-variable-assignments:python params)))
    (org-babel-comint-in-buffer session
      (mapc (lambda (var)
              (end-of-line 1) (insert var) (comint-send-input)
              (org-babel-comint-wait-for-output session)) var-lines))
    session))

(defun org-babel-load-session:python (session body params)
  "Load BODY into SESSION."
  (save-window-excursion
    (let ((buffer (org-babel-prep-session:python session params)))
      (with-current-buffer buffer
        (goto-char (process-mark (get-buffer-process (current-buffer))))
        (insert (org-babel-chomp body)))
      buffer)))

;; helper functions

(defun org-babel-variable-assignments:python (params)
  "Return a list of Python statements assigning the block's variables."
  (mapcar
   (lambda (pair)
     (format "%s=%s"
	     (car pair)
	     (org-babel-python-var-to-python (cdr pair))))
   (mapcar #'cdr (org-babel-get-header params :var))))

(defun org-babel-python-var-to-python (var)
  "Convert an elisp value to a python variable.
Convert an elisp value, VAR, into a string of python source code
specifying a variable of the same value."
  (if (listp var)
      (concat "[" (mapconcat #'org-babel-python-var-to-python var ", ") "]")
    (if (equal var 'hline)
	org-babel-python-hline-to
      (format
       (if (and (stringp var) (string-match "[\n\r]" var)) "\"\"%S\"\"" "%S")
       var))))

(defun org-babel-python-table-or-string (results)
  "Convert RESULTS into an appropriate elisp value.
If the results look like a list or tuple, then convert them into an
Emacs-lisp table, otherwise return the results as a string."
  ((lambda (res)
     (if (listp res)
	 (mapcar (lambda (el) (if (equal el 'None)
			     org-babel-python-None-to el))
		 res)
       res))
   (org-babel-script-escape results)))

(defvar org-babel-python-buffers '((:default . nil)))

(defun org-babel-python-session-buffer (session)
  "Return the buffer associated with SESSION."
  (cdr (assoc session org-babel-python-buffers)))

(defvar py-default-interpreter)
(defun org-babel-python-initiate-session-by-key (&optional session)
  "Initiate a python session.
If there is not a current inferior-process-buffer in SESSION
then create.  Return the initialized session."
  (require org-babel-python-mode)
  (save-window-excursion
    (let* ((session (if session (intern session) :default))
           (python-buffer (org-babel-python-session-buffer session)))
      (cond
       ((and (eq 'python org-babel-python-mode)
	     (fboundp 'run-python)) ; python.el
	(if (version< "24.1" emacs-version)
	    (run-python org-babel-python-command)
	  (run-python)))
       ((and (eq 'python-mode org-babel-python-mode)
	     (fboundp 'py-shell)) ; python-mode.el
	;; Make sure that py-which-bufname is initialized, as otherwise
	;; it will be overwritten the first time a Python buffer is
	;; created.
	(py-toggle-shells py-default-interpreter)
	;; `py-shell' creates a buffer whose name is the value of
	;; `py-which-bufname' with '*'s at the beginning and end
	(let* ((bufname (if (and python-buffer (buffer-live-p python-buffer))
			    (replace-regexp-in-string ;; zap surrounding *
			     "^\\*\\([^*]+\\)\\*$" "\\1" python-buffer)
			  (concat "Python-" (symbol-name session))))
	       (py-which-bufname bufname))
	  (py-shell)
	  (setq python-buffer (concat "*" bufname "*"))))
       (t
	(error "No function available for running an inferior Python")))
      (setq org-babel-python-buffers
	    (cons (cons session python-buffer)
		  (assq-delete-all session org-babel-python-buffers)))
      session)))

(defun org-babel-python-initiate-session (&optional session params)
  "Create a session named SESSION according to PARAMS."
  (unless (string= session "none")
    (org-babel-python-session-buffer
     (org-babel-python-initiate-session-by-key session))))

(defvar org-babel-python-eoe-indicator "'org_babel_python_eoe'"
  "A string to indicate that evaluation has completed.")
(defvar org-babel-python-wrapper-method
  "
def main():
%s

open('%s', 'w').write( str(main()) )")
(defvar org-babel-python-pp-wrapper-method
  "
import pprint
def main():
%s

open('%s', 'w').write( pprint.pformat(main()) )")

(defun org-babel-python-evaluate
  (session body &optional result-type result-params preamble)
  "Evaluate BODY as Python code."
  (if session
      (org-babel-python-evaluate-session
       session body result-type result-params)
    (org-babel-python-evaluate-external-process
     body result-type result-params preamble)))

(defun org-babel-python-evaluate-external-process
  (body &optional result-type result-params preamble)
  "Evaluate BODY in external python process.
If RESULT-TYPE equals 'output then return standard output as a
string.  If RESULT-TYPE equals 'value then return the value of the
last statement in BODY, as elisp."
  ((lambda (raw)
     (org-babel-result-cond result-params
       raw
       (org-babel-python-table-or-string (org-babel-trim raw))))
   (case result-type
     (output (org-babel-eval org-babel-python-command
			     (concat (if preamble (concat preamble "\n") "")
				     body)))
     (value (let ((tmp-file (org-babel-temp-file "python-")))
	      (org-babel-eval
	       org-babel-python-command
	       (concat
		(if preamble (concat preamble "\n") "")
		(format
		 (if (member "pp" result-params)
		     org-babel-python-pp-wrapper-method
		   org-babel-python-wrapper-method)
		 (mapconcat
		  (lambda (line) (format "\t%s" line))
		  (split-string
		   (org-remove-indentation
		    (org-babel-trim body))
		   "[\r\n]") "\n")
		 (org-babel-process-file-name tmp-file 'noquote))))
	      (org-babel-eval-read-file tmp-file))))))

(defun org-babel-python-evaluate-session
  (session body &optional result-type result-params)
  "Pass BODY to the Python process in SESSION.
If RESULT-TYPE equals 'output then return standard output as a
string.  If RESULT-TYPE equals 'value then return the value of the
last statement in BODY, as elisp."
  (let* ((send-wait (lambda () (comint-send-input nil t) (sleep-for 0 5)))
	 (dump-last-value
	  (lambda
	    (tmp-file pp)
	    (mapc
	     (lambda (statement) (insert statement) (funcall send-wait))
	     (if pp
		 (list
		  "import pprint"
		  (format "open('%s', 'w').write(pprint.pformat(_))"
			  (org-babel-process-file-name tmp-file 'noquote)))
	       (list (format "open('%s', 'w').write(str(_))"
			     (org-babel-process-file-name tmp-file 'noquote)))))))
	 (input-body (lambda (body)
		       (mapc (lambda (line) (insert line) (funcall send-wait))
			     (split-string body "[\r\n]"))
		       (funcall send-wait))))
    ((lambda (results)
       (unless (string= (substring org-babel-python-eoe-indicator 1 -1) results)
	 (org-babel-result-cond result-params
	   results
	   (org-babel-python-table-or-string results))))
     (case result-type
       (output
	(mapconcat
	 #'org-babel-trim
	 (butlast
	  (org-babel-comint-with-output
	      (session org-babel-python-eoe-indicator t body)
	    (funcall input-body body)
	    (funcall send-wait) (funcall send-wait)
	    (insert org-babel-python-eoe-indicator)
	    (funcall send-wait))
	  2) "\n"))
       (value
	(let ((tmp-file (org-babel-temp-file "python-")))
	  (org-babel-comint-with-output
	      (session org-babel-python-eoe-indicator nil body)
	    (let ((comint-process-echoes nil))
	      (funcall input-body body)
	      (funcall dump-last-value tmp-file (member "pp" result-params))
	      (funcall send-wait) (funcall send-wait)
	      (insert org-babel-python-eoe-indicator)
	      (funcall send-wait)))
	  (org-babel-eval-read-file tmp-file)))))))

(defun org-babel-python-read-string (string)
  "Strip 's from around Python string."
  (if (string-match "^'\\([^\000]+\\)'$" string)
      (match-string 1 string)
    string))

(provide 'ob-python)



;;; ob-python.el ends here

debug log:

solving 1b3b892 ...
found 1b3b892 in https://list.orgmode.org/orgmode/51267EAF.3020404@easy-emacs.de/
found 02d762c in https://git.savannah.gnu.org/cgit/emacs/org-mode.git
preparing index
index prepared:
100644 02d762cf2af3c6755cd7bacf7a84f54ec9120619	lisp/ob-python.el

applying [1/1] https://list.orgmode.org/orgmode/51267EAF.3020404@easy-emacs.de/
diff --git a/lisp/ob-python.el b/lisp/ob-python.el
index 02d762c..1b3b892 100644

Checking patch lisp/ob-python.el...
Applied patch lisp/ob-python.el cleanly.

index at:
100644 1b3b8920478a97aafaec9ea12949d4842bdca841	lisp/ob-python.el

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).