Strange behavior with ipython in Emacs

I'm having a small problem using ipython as my python interpreter with python-mode.el. everything functionally works, but pressing RET jumps ahead two lines (whether开发者_运维问答 I've entered an expression or not) and the auto-indent for function definitions is strange. This is what it looks like:

In [164]: a = 1

In [165]:   
In [166]: a + 3

Out[166]: 4

In [167]:   
In [168]: def nine():

   .....:    .....:     return 4+5

   .....: 
In [169]: 

In [170]:   

There should only be one .....: on the 'return' line. I suspect some indent/newline function in ipython.el or python-mode.el is being called twice somehow. (I don't really know elisp but this may be the issue that gets me into it).

When I do 'M-x ansi-term RET ipython' it works as expected, but this is not ideal because sending code from other files, debugging, etc. don't work.

I can imagine two ways to fix this: either figure out how my setup is causing the double indents/newlines and fix that, or somehow change the default python interpreter from ipython.el to ipython in ansi-term while still preserving the ability to send code and debug.

Any advice on where to start with these is appreciated.

You could check your binding for RET in a Python buffer (M-x describe-bindings) and then go from there. For me it is bound to newline. Click on the bound function or use M-x describe-function to look for the definition of the bound function.

OK I figured this out in the course of porting the .emacs from my Ubuntu work machine to my MacBook.

First, I commented out the following lines from my .emacs:

(defadvice comint-send-input (around block-comint-formatting activate)
 (if (string= (buffer-name) "*Python*")
     (letf (((symbol-function 'add-text-properties) (lambda (x y z) nil)))
       ad-do-it))
ad-do-it)

Which got rid of the double newline thing. I also added

(define-key py-shell-map "\C-j" 'ipython-send-and-indent)

to then end of my ipython.el so I could use it then same way as in python-mode.

M-x ipython RET

is all you need with current python-mode.el

http://launchpad.net/python-mode

It's not perfect with ipython though, you might help sending bug-reports