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| = Sage in Emacs = | = Sage and Emacs = |
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| There is support for using SAGE interactively from within emacs, and editing Python code in emacs: |
The purpose of this page is to collect tips and tricks for Sage users and developpers using the text editor Emacs. |
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| * Download sage.el and byte compile it, or download sage.elc. | == Sage-mode == |
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| * Download python-mode.el and byte compile it, or download python-mode.elc. This is highly recommended since it is a <i>vast improvement</i> over editing Python code without a special mode. |
This emacs mode allows for running a Sage interpreter inside emacs, and interacting with it sending in chunks of code or doctests, directly opening the appropriate source files from the help, the debugger or the tracebacks. It also provides goodies for running tests, etc. |
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| (NOTE: Recent versions of Emacs have their own major mode for Python called [[href="http://cvs.savannah.gnu.org/viewvc/emacs/lisp/progmodes/python.el?root=emacs&view=log python.el]]. So those with GNU Emacs 22 or 23 shouldn't need python-mode.el. The modifications to your .emacs file suggested below will be the same, except you can remove or comment out {{{(load "python-mode")}}}.) |
See: [[sage-mode]] or [[http://bitbucket.org/gvol/sage-mode]] |
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| * Download pyrex-mode.el and byte compile it, or download pyrex-mode.elc. | == EIN: IPython notebook client in Emacs == |
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| * Put the .elc files all in a directory, e.g., {{{/home/was/.emacs-scripts}}}. | https://github.com/tkf/emacs-ipython-notebook |
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| * Add the following to your {{{.emacs}}} file, where you replace {{{/home/was/.emacs-scripts}}} with the directory where you put those elc files. | This is currently non functional due to an incompatibility with the ipython shipped with Sage. Yet this sounds promising. See: |
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| {{{ (add-to-list 'load-path (expand-file-name "/home/was/.emacs-scripts/")) |
- https://github.com/tkf/emacs-ipython-notebook/issues/131 - http://trac.sagemath.org/ticket/16053 |
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| (load "pyrex-mode") (load "python-mode") (setq ipython-command "~/bin/sage") ;; depends on where your sage is. (load "sage") (require 'ipython) |
== Miscellaneous == |
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| (fset 'py-shell-fullscreen [?\M-x ?p ?y ?- ?s ?h ?e ?l ?l return ?\C-x ?1]) (define-key esc-map "i" 'py-shell-fullscreen) |
- which-function-mode: this minor mode displays in the status bar the name of the class or function being edited. This is a life saver for code with nested classes, and in particular category code. |
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| (setq auto-mode-alist (cons '("\.pyx\'" . pyrex-mode) auto-mode-alist)) (setq auto-mode-alist (cons '("\.pxd\'" . pyrex-mode) auto-mode-alist)) (setq auto-mode-alist (cons '("\.pxi\'" . python-mode) auto-mode-alist)) (setq auto-mode-alist (cons '("\.sage\'" . python-mode) auto-mode-alist)) }}} |
Setup: M-x customize-variable which-function-mode |
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| * Start emacs. Now Python code and pyrex files are colored correctly, and there are a bunch of extra commands. | - I (NT) have this in my python-mode-hook: {{{ (set-variable 'indent-tabs-mode nil) (set-variable 'py-indent-offset 4) }}} This might not be so relevant with recent versions of emacs. |
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| * Start emacs. Type Alt-i. A SAGE window should appear. Colors and tab completion should work. If you are in debugging mode (%pdb), then when an error occurs, an emacs window opens taking you to that point in the source code! (Note: Tab completion does not work when you run emacs with "emacs -nw".) | == See also == |
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== Hints == If when running SAGE, the screen gets cluttered up, e.g., by the output of help, just type Ctrl-[_], i.e., Ctrl-Shift-[- key] to undo, which will remove the last chunk of output completely. |
- This (not sot recent) [[http://www.saltycrane.com/blog/2010/05/my-emacs-python-environment/ blog post]] on customizing emacs for Python |
Sage and Emacs
The purpose of this page is to collect tips and tricks for Sage users and developpers using the text editor Emacs.
Sage-mode
This emacs mode allows for running a Sage interpreter inside emacs, and interacting with it sending in chunks of code or doctests, directly opening the appropriate source files from the help, the debugger or the tracebacks. It also provides goodies for running tests, etc.
See: sage-mode or http://bitbucket.org/gvol/sage-mode
EIN: IPython notebook client in Emacs
https://github.com/tkf/emacs-ipython-notebook
This is currently non functional due to an incompatibility with the ipython shipped with Sage. Yet this sounds promising. See:
- https://github.com/tkf/emacs-ipython-notebook/issues/131 - http://trac.sagemath.org/ticket/16053
Miscellaneous
- which-function-mode: this minor mode displays in the status bar the
- name of the class or function being edited. This is a life saver for code with nested classes, and in particular category code. Setup: M-x customize-variable which-function-mode
- I (NT) have this in my python-mode-hook:
(set-variable 'indent-tabs-mode nil) (set-variable 'py-indent-offset 4)
This might not be so relevant with recent versions of emacs.
See also
- This (not sot recent) http://www.saltycrane.com/blog/2010/05/my-emacs-python-environment/ blog post on customizing emacs for Python