A two-way integration between Vim and IPython 0.11+
- author: Paul Ivanov (http://pirsquared.org)
- github: http://github.com/ivanov/vim-ipython
- demos: http://pirsquared.org/vim-ipython/
- blogpost: http://pirsquared.org/blog/2011/07/28/vim-ipython/
Using this plugin, you can send lines or whole files for IPython to
execute, and also get back object introspection and word completions in
Vim, like what you get with:
The big change from previous versions of
ipy.vim is that it no longer
requires the old brittle
ipy_vimserver.py instantiation, and since
it uses just vim and python, it is platform independent (i.e. works
even on windows, unlike the previous *nix only solution). The requirements
are IPython 0.11+ with zeromq capabilities, vim compiled with +python.
If you can launch
ipython qtconsole or
ipython kernel, and
:echo has('python') returns 1 in vim, you should be good to go.
ipython qtconsole [*] and copy the connection string.
ipy.vim file, which provides new IPython command:
:source ipy.vim (or copy it to ~/.vim/ftplugin/python to load automatically) :IPythonClipboard (or :IPythonXSelection if you're using X11 without having to copy)
The :IPython command allows you to put the full connection string. For IPython 0.11, it would look like this:
:IPython --existing --shell=41882 --iopub=43286 --stdin=34987 --hb=36697
and for IPython 0.12, like this:
:IPython --existing kernel-85997.json
:IPythonClipboard command just uses the
+ register to get the
connection string, whereas
:IPythonXSelection uses the
NEW in IPython 0.12! Since IPython 0.12, you can simply use:
without arguments to connect to the most recent IPython session (this is the
same as passing just the
--existing flag to
ipython qtconsole and
|[*]||Though the demos above use |
Sending lines to IPython
Now type out a line and send it to IPython using
<Ctrl-S> from Command mode:
You should see a notification message confirming the line was sent, along
with the input number for the line, like so
In: import os.
<Ctrl-S> also works from insert mode, but doesn't show notification,
monitor_subchannel is set to
True (see vim-ipython 'shell',
It also works blockwise in Visual Mode. Select and send these lines using
import this,math # secret decoder ring a,b,c,d,e,f,g,h,i = range(1,10) code =(c,a,d,a,e,i,) msg = '...jrer nyy frag sebz Ivz.\nIvz+VClguba=%fyl '+this.s.split()[g] decode=lambda x:"\n"+"".join([this.d.get(c,c) for c in x])+"!" format=lambda x:'These lines:\n '+'\n '.join([l for l in x.splitlines()]) secret_decoder = lambda a,b: format(a)+decode(msg)%str(b)[:-1] '%d'*len(code)%code == str(int(math.pi*1e5))
Then, go to the qtconsole and run this line:
You can also send whole files to IPython's
%run magic using
NEW in IPython 0.12!
If you're trying to do run code fragments that have leading whitespace, use
<Alt-S> instead - it will dedent a single line, and remove the leading
whitespace of the first line from all lines in a visual mode selection.
IPython's object? Functionality
If you're using gvim, mouse-over a variable to see IPython's
If you're using vim from a terminal, or want to copy something from the
<leader> is usually
\ (the backslash
key). This will open a quickpreview window, which can be closed by hitting
IPython's tab-completion Functionality
vim-ipython activates a 'completefunc' that queries IPython.
A completefunc is activated using
Ctrl-X Ctrl-U in Insert Mode (vim
default). You can combine this functionality with SuperTab to get tab
NEW since IPython 0.11!
By monitoring km.sub_channel, we can recreate what messages were sent to IPython, and what IPython sends back in response.
monitor_subchannel is a parameter that sets whether this 'shell' should
updated on every sent command (default: True).
If at any later time you wish to bring this shell up, including if you've set
You can change these at the top of the ipy.vim:
reselect = False # reselect lines after sending from Visual mode show_execution_count = True # wait to get numbers for In: feedback? monitor_subchannel = True # update vim-ipython 'shell' on every send? run_flags= "-i" # flags to for IPython's run magic when using <F5>
Disabling default mappings
In your own
.vimrc, if you don't like the mappings provided by default,
you can define a variable
let g:ipy_perform_mappings=0 which will prevent
vim-ipython from defining any of the default mappings.
For now, vim-ipython only connects to an ipython session in progress.
The ipdb integration is not yet re-implemented.
If you're running inside
screen, read about the
<CTRL-S>issue here, and add this line to your
.bashrcto fix it:
stty stop undef # to unmap ctrl-s
In vim, if you're getting
ImportError: No module named IPython.zmq.blockingkernelmanagerbut are able to import it in regular python, either
sys.pathin vim differs from the
sys.pathin regular python. Try running these two lines, and comparing their output files:
$ vim -c 'py import vim, sys; vim.current.buffer.append(sys.path)' -c ':wq vim_syspath' $ python -c "import sys; f=file('python_syspath','w'); f.write('\n'.join(sys.path)); f.close()"
your vim is compiled against a different python than you are launching. See if there's a difference between
$ vim -c ':py import os; print os.__file__' -c ':q' $ python -c 'import os; print os.__file__'
For vim inside a terminal, using the arrow keys won't work inside a documentation buffer, because the mapping for
^[OAand so on, and we use
<Esc>as a quick way of closing the documentation preview window. If you want go without this quick close functionality and want to use the arrow keys instead, look for instructions starting with "Known issue: to enable the use of arrow keys..." in the
@fholgado's update to
minibufexpl.vimthat is up on GitHub will always put the cursor in the minibuf after sending a command when
monitor_subchannelis set. This is a bug in minibufexpl.vim and the workaround is described in vim-ipython issue #7.
Thanks and Bug Participation
- @MinRK for guiding me through the IPython kernel manager protocol.
- @nakamuray and @tcheneau for reporting and providing a fix for when vim is compiled without a gui (#1)
- @unpingco for reporting Windows bugs (#3,#4), providing better multiline dedenting (#15), and suggesting that a resized vim-ipython shell stays resized (#16).
- @simon-b for terminal vim arrow key issue (#5)
- @jorgesca and @kwgoodman for shell update problems (#6)
- @zeekay for easily allowing custom mappings (#9)
- @minrk for support of connection_file-based IPython connection (#13)
- @jorgesca for reporting the lack of profile handling capability (#14)
- @enzbang for removing mapping that's not currently functional (#17)
- @ogrisel for fixing documentation typo (#19)