How to open IPython interpreter in emacs?

问题:

In order to use IPython during Python development in Emacs, I have been opening up a terminal, and typing ipython. This doesn't seem like the right way to do it.

For one thing, my buffer lists this buffer as *ansi-term*, which is confusing, as I often end up with multiple terminals, one of which is dedicated to Python. I also see that I can open a python interpreter directly with M-x python-shell. It seems like there ought to be a similar option for IPython.

Is there a better way to use the IPython interpreter in Emacs?

I'm using Emacs 24 with Prelude.

回答1:

I don't know what Prelude is, but if you can install the latest Emacs (i.e, Emacs with Fabian's python-mode included), then you can use the following to let Python mode know your preferred choice of interpreter. Then you just need to call M-x run-python:

--

(when (executable-find "ipython")
  (setq python-shell-interpreter "ipython"))

--

回答2:

UPD Detailed instructions for beginners:

1. Copy this:

   (defun ipython ()
       (interactive)
       (term "/usr/bin/ipython"))
   

2. Try first launching Emacs as emacs -q from the terminal. -q means don't load any customized code. It means that in this mode your emacs will behave exactly like mine.

3. You should now be at the welcome screen. Press q.
4. You should now be in the *scratch* buffer. Press C-y to paste the code you copied from the browser.
5. Position your cursor at the very end of the code, right after the last parenthesis.
6. Press C-j to evaluate the code. The name ipython pops up.
7. Now you can execute this command as any other e.g. M-x ipython.
8. If you want this change to become permanent, append the code to your ~/.emacs.

回答3:

I've tried abo-abo's approach to running ipython inside of emacs. Its a pretty slick way of shortcutting shell functions within emacs. However, you do lose emacs functionality when you are in the shell (e.g. can't M-x o out of the shell)

Instead, I personally think that using the Emacs builtin shell command (M-x shell) is much better. You can run ipython within the Emacs builtin shell and still have all Emacs functionality that we all know and love.

回答4:

Seems a bit late, however was also having similar problem, wanted to have ipython as default python interpreter for my emacs 24.x. The following worked like a magic -

(require 'python)
(setq python-shell-interpreter "ipython")
(setq python-shell-interpreter-args "--pylab")

thanks to http://www.flannaghan.com/2013/08/29/ipython-emacs for saving my day and hopefully yours.

PS: seems having anaconda preinstalled in your system helps...

回答5:

Edit: Whoops, the project below is a fork, not the official Prelude project. The second paragraph here still stands. Or you could try the fork.

It looks like Prelude already sets up ipython integration. Maybe your copy is out of date?

If M-x run-python doesn't launch ipython, try adding (setq python-shell-interpreter "ipython") to your init file (or just evaluating it) and running M-x run-python again. After a quick test without Prelude that seems to be all that is necessary.

回答6:

You can use my Emacs extension called emacs-ipython for this.

https://github.com/burakbayramli/emacs-ipython

In a LaTeX buffer (you can change this to be any buffer) between code blocks with one keystroke it sends the python code to ipython kernel and displays the results in a verbatim block underneath.