How do I use vi keys in ipython under *nix?
PythonBashViIpythonReadlinePython Problem Overview
Currently in Bash I use set -o vi to enable vi mode in my bash prompt.
How do I get this going in ipython?
Python Solutions
Solution 1 - Python
In case someone's wandering in here recently, IPython 5.0 switched from readline to prompt_toolkit, so an updated answer to this question is to pass an option:
$ ipython --TerminalInteractiveShell.editing_mode=vi
... or to set it globally in the profile configuration (~/.ipython/profile_default/ipython_config.py; create it with ipython profile create if you don't have it) with:
c.TerminalInteractiveShell.editing_mode = 'vi'
Solution 2 - Python
Looks like a solution works for many other readline compatible apps:
Set the following in your ~/.inputrc file:
set editing-mode vi
set keymap vi
set convert-meta on
Solution 3 - Python
You can also interactively switch between Vi-mode and Emacs mode. According to the the readline docs to switch between them you are supposed to be able to use the M-C-j key combination but that only seems to allow me to switch to vi-mode - on my Mac (where ESC is used as the 'Meta' key) it is: ESC+CTRL+j. To switch back to Emacs mode one can use C-e but that didn't appear to work for me - I had to instead do M-C-e - on my Mac it is: ESC+CTRL+e.
FYI my ~/.inputrc is set up as follows:
set meta-flag on
set input-meta on
set convert-meta off
set output-meta on
Solution 4 - Python
ipython uses the readline library and this is configurable using the ~/.inputrc file. You can add
set editing-mode vi
to that file to make all readline based applications use vi style keybindings instead of Emacs.
Solution 5 - Python
I needed to be able to switch modes interactively in IPython 5 and I found you can do so by recreating the prompt manager on the fly:
a = get_ipython().configurables[0]; a.editing_mode='vi'; a.init_prompt_toolkit_cli()
Solution 6 - Python
You may set vi in your .ipython start-up config file. Create one if you don't have it by adding a file to ~/.ipython/profile_default/startup/ called something like start.py. Here's an example:
# Initializing script for ipython in ~/.ipython/profile_default/startup/
from IPython import get_ipython
ipython = get_ipython()
# If in ipython, set vi and load autoreload extension
if 'ipython' in globals():
ipython.editing_mode = 'vi'
ipython.magic('load_ext autoreload')
ipython.magic('autoreload 2')
from Myapp.models import *
That last line is if you use ipython with Django, and want to import all your models by default.