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0839dc4322
Protect apostrophes not covered by the last backport. Convert expressions like '(...) to \\='(...) and symbols written as 'name to `name'. (In addition to ensuring the correct display, the latter also improves consistency with many Org docstrings.) If these aren't protected, Emacs 25 may display them as curved quotes in the help buffer, depending on the value of text-quoting-style.
347 lines
13 KiB
EmacsLisp
347 lines
13 KiB
EmacsLisp
;;; ob-python.el --- org-babel functions for python evaluation
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;; Copyright (C) 2009-2015 Free Software Foundation, Inc.
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;; Authors: Eric Schulte
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;; Dan Davison
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;; Keywords: literate programming, reproducible research
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;; Homepage: http://orgmode.org
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;; This file is part of GNU Emacs.
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;; GNU Emacs 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 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs 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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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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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 'ob)
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(eval-when-compile (require 'cl))
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(declare-function org-remove-indentation "org" )
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(declare-function py-shell "ext:python-mode" (&optional argprompt))
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(declare-function py-toggle-shells "ext:python-mode" (arg))
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(declare-function run-python "ext:python" (cmd &optional dedicated show))
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(defvar org-babel-tangle-lang-exts)
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(add-to-list 'org-babel-tangle-lang-exts '("python" . "py"))
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(defvar org-babel-default-header-args:python '())
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(defcustom org-babel-python-command "python"
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"Name of the command for executing Python code."
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:version "24.4"
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:package-version '(Org . "8.0")
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:group 'org-babel
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:type 'string)
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(defcustom org-babel-python-mode
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(if (or (featurep 'xemacs) (featurep 'python-mode)) 'python-mode 'python)
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"Preferred python mode for use in running python interactively.
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This will typically be either `python' or `python-mode'."
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:group 'org-babel
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:version "24.4"
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:package-version '(Org . "8.0")
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:type 'symbol)
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(defcustom org-babel-python-hline-to "None"
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"Replace hlines in incoming tables with this when translating to python."
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:group 'org-babel
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:version "24.4"
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:package-version '(Org . "8.0")
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:type 'string)
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(defcustom org-babel-python-None-to 'hline
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"Replace `None' in python tables with this before returning."
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:group 'org-babel
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:version "24.4"
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:package-version '(Org . "8.0")
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:type 'symbol)
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(defun org-babel-execute:python (body params)
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"Execute a block of Python code with Babel.
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This function is called by `org-babel-execute-src-block'."
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(let* ((session (org-babel-python-initiate-session
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(cdr (assoc :session params))))
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(result-params (cdr (assoc :result-params params)))
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(result-type (cdr (assoc :result-type params)))
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(return-val (when (and (eq result-type 'value) (not session))
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(cdr (assoc :return params))))
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(preamble (cdr (assoc :preamble params)))
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(org-babel-python-command
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(or (cdr (assoc :python params)) org-babel-python-command))
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(full-body
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(org-babel-expand-body:generic
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(concat body (if return-val (format "\nreturn %s" return-val) ""))
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params (org-babel-variable-assignments:python params)))
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(result (org-babel-python-evaluate
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session full-body result-type result-params preamble)))
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(org-babel-reassemble-table
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result
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(org-babel-pick-name (cdr (assoc :colname-names params))
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(cdr (assoc :colnames params)))
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(org-babel-pick-name (cdr (assoc :rowname-names params))
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(cdr (assoc :rownames params))))))
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(defun org-babel-prep-session:python (session params)
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"Prepare SESSION according to the header arguments in PARAMS.
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VARS contains resolved variable references"
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(let* ((session (org-babel-python-initiate-session session))
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(var-lines
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(org-babel-variable-assignments:python params)))
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(org-babel-comint-in-buffer session
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(mapc (lambda (var)
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(end-of-line 1) (insert var) (comint-send-input)
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(org-babel-comint-wait-for-output session)) var-lines))
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session))
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(defun org-babel-load-session:python (session body params)
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"Load BODY into SESSION."
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(save-window-excursion
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(let ((buffer (org-babel-prep-session:python session params)))
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(with-current-buffer buffer
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(goto-char (process-mark (get-buffer-process (current-buffer))))
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(insert (org-babel-chomp body)))
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buffer)))
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;; helper functions
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(defun org-babel-variable-assignments:python (params)
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"Return a list of Python statements assigning the block's variables."
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(mapcar
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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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(mapcar #'cdr (org-babel-get-header params :var))))
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(defun org-babel-python-var-to-python (var)
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"Convert an elisp value to a python variable.
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Convert an elisp value, VAR, into a string of python source code
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specifying a variable 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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(if (equal var 'hline)
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org-babel-python-hline-to
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(format
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(if (and (stringp var) (string-match "[\n\r]" var)) "\"\"%S\"\"" "%S")
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(if (stringp var) (substring-no-properties var) var)))))
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(defun org-babel-python-table-or-string (results)
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"Convert RESULTS into an appropriate elisp value.
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If the results look like a list or tuple, then convert them into an
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Emacs-lisp table, otherwise return the results as a string."
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(let ((res (org-babel-script-escape results)))
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(if (listp res)
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(mapcar (lambda (el) (if (equal el 'None)
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org-babel-python-None-to el))
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res)
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res)))
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(defvar org-babel-python-buffers '((:default . "*Python*")))
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(defun org-babel-python-session-buffer (session)
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"Return the buffer associated with SESSION."
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(cdr (assoc session org-babel-python-buffers)))
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(defun org-babel-python-with-earmuffs (session)
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(let ((name (if (stringp session) session (format "%s" session))))
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(if (and (string= "*" (substring name 0 1))
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(string= "*" (substring name (- (length name) 1))))
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name
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(format "*%s*" name))))
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(defun org-babel-python-without-earmuffs (session)
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(let ((name (if (stringp session) session (format "%s" session))))
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(if (and (string= "*" (substring name 0 1))
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(string= "*" (substring name (- (length name) 1))))
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(substring name 1 (- (length name) 1))
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name)))
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(defvar py-default-interpreter)
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(defvar py-which-bufname)
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(defvar python-shell-buffer-name)
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(defun org-babel-python-initiate-session-by-key (&optional session)
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"Initiate a python 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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(require org-babel-python-mode)
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(save-window-excursion
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(let* ((session (if session (intern session) :default))
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(python-buffer (org-babel-python-session-buffer session))
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(cmd (if (member system-type '(cygwin windows-nt ms-dos))
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(concat org-babel-python-command " -i")
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org-babel-python-command)))
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(cond
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((and (eq 'python org-babel-python-mode)
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(fboundp 'run-python)) ; python.el
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(if (not (version< "24.1" emacs-version))
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(run-python cmd)
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(unless python-buffer
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(setq python-buffer (org-babel-python-with-earmuffs session)))
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(let ((python-shell-buffer-name
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(org-babel-python-without-earmuffs python-buffer)))
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(run-python cmd))))
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((and (eq 'python-mode org-babel-python-mode)
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(fboundp 'py-shell)) ; python-mode.el
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;; Make sure that py-which-bufname is initialized, as otherwise
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;; it will be overwritten the first time a Python buffer is
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;; created.
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(py-toggle-shells py-default-interpreter)
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;; `py-shell' creates a buffer whose name is the value of
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;; `py-which-bufname' with '*'s at the beginning and end
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(let* ((bufname (if (and python-buffer (buffer-live-p python-buffer))
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(replace-regexp-in-string ;; zap surrounding *
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"^\\*\\([^*]+\\)\\*$" "\\1" python-buffer)
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(concat "Python-" (symbol-name session))))
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(py-which-bufname bufname))
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(py-shell)
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(setq python-buffer (org-babel-python-with-earmuffs bufname))))
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(t
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(error "No function available for running an inferior Python")))
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(setq org-babel-python-buffers
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(cons (cons session python-buffer)
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(assq-delete-all session org-babel-python-buffers)))
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session)))
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(defun org-babel-python-initiate-session (&optional session params)
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"Create a session named SESSION according to PARAMS."
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(unless (string= session "none")
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(org-babel-python-session-buffer
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(org-babel-python-initiate-session-by-key session))))
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(defvar org-babel-python-eoe-indicator "'org_babel_python_eoe'"
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"A string to indicate that evaluation has completed.")
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(defconst org-babel-python-wrapper-method
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"
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def main():
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%s
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open('%s', 'w').write( str(main()) )")
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(defconst org-babel-python-pp-wrapper-method
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"
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import pprint
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def main():
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%s
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open('%s', 'w').write( pprint.pformat(main()) )")
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(defun org-babel-python-evaluate
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(session body &optional result-type result-params preamble)
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"Evaluate BODY as Python code."
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(if session
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(org-babel-python-evaluate-session
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session body result-type result-params)
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(org-babel-python-evaluate-external-process
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body result-type result-params preamble)))
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(defun org-babel-python-evaluate-external-process
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(body &optional result-type result-params preamble)
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"Evaluate BODY in external python process.
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If RESULT-TYPE equals `output' then return standard output as a
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string. If RESULT-TYPE equals `value' then return the value of the
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last statement in BODY, as elisp."
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(let ((raw
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(case result-type
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(output (org-babel-eval org-babel-python-command
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(concat (if preamble (concat preamble "\n"))
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body)))
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(value (let ((tmp-file (org-babel-temp-file "python-")))
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(org-babel-eval
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org-babel-python-command
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(concat
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(if preamble (concat preamble "\n") "")
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(format
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(if (member "pp" result-params)
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org-babel-python-pp-wrapper-method
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org-babel-python-wrapper-method)
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(mapconcat
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(lambda (line) (format "\t%s" line))
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(split-string
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(org-remove-indentation
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(org-babel-trim body))
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"[\r\n]") "\n")
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(org-babel-process-file-name tmp-file 'noquote))))
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(org-babel-eval-read-file tmp-file))))))
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(org-babel-result-cond result-params
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raw
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(org-babel-python-table-or-string (org-babel-trim raw)))))
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(defun org-babel-python-evaluate-session
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(session body &optional result-type result-params)
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"Pass BODY to the Python process in SESSION.
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If RESULT-TYPE equals `output' then return standard output as a
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string. If RESULT-TYPE equals `value' then return the value of the
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last statement in BODY, as elisp."
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(let* ((send-wait (lambda () (comint-send-input nil t) (sleep-for 0 5)))
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(dump-last-value
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(lambda
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(tmp-file pp)
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(mapc
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(lambda (statement) (insert statement) (funcall send-wait))
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(if pp
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(list
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"import pprint"
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(format "open('%s', 'w').write(pprint.pformat(_))"
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(org-babel-process-file-name tmp-file 'noquote)))
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(list (format "open('%s', 'w').write(str(_))"
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(org-babel-process-file-name tmp-file
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'noquote)))))))
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(input-body (lambda (body)
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(mapc (lambda (line) (insert line) (funcall send-wait))
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(split-string body "[\r\n]"))
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(funcall send-wait)))
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(results
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(case result-type
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(output
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(mapconcat
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#'org-babel-trim
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(butlast
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(org-babel-comint-with-output
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(session org-babel-python-eoe-indicator t body)
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(funcall input-body body)
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(funcall send-wait) (funcall send-wait)
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(insert org-babel-python-eoe-indicator)
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(funcall send-wait))
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2) "\n"))
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(value
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(let ((tmp-file (org-babel-temp-file "python-")))
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(org-babel-comint-with-output
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(session org-babel-python-eoe-indicator nil body)
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(let ((comint-process-echoes nil))
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(funcall input-body body)
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(funcall dump-last-value tmp-file
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(member "pp" result-params))
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(funcall send-wait) (funcall send-wait)
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(insert org-babel-python-eoe-indicator)
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(funcall send-wait)))
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(org-babel-eval-read-file tmp-file))))))
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(unless (string= (substring org-babel-python-eoe-indicator 1 -1) results)
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(org-babel-result-cond result-params
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results
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(org-babel-python-table-or-string results)))))
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(defun org-babel-python-read-string (string)
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"Strip \\='s from around Python string."
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(if (string-match "^'\\([^\000]+\\)'$" string)
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(match-string 1 string)
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string))
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(provide 'ob-python)
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;;; ob-python.el ends here
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