Vim autocomplete for Python

Question

I am trying to incorporate an autocomplete feature in Vim. I have used the omnicompletion of Vim as well as Pydiction. But in both the cases this message pops up:

Omni completion (^O^N^P) Pattern not found

I have tried Vim's Omnicompletion with Python just doesn't work. But this is not helping. Is there a workaround?

did you see this link ? http://blog.dispatched.ch/2009/05/24/vim-as-python-ide/ — Mohammad Efazati, Aug 21 '11 at 11:47
Is the file detected as a python file? Open it up and run `:echo &ft`. If this doesn't return "python" then try adding 'filetype plugin on' to your vimrc and try all this again. — Randy Morris, Aug 21 '11 at 12:22
Old question: [Getting proper code completion for Python on Vim? - Stack Overflow](https://stackoverflow.com/questions/1520576/getting-proper-code-completion-for-python-on-vim) with some (older) plugins. — ■ Not really answer this *particular* question, but if you're already using `jupyter-vim`, check out my package `jupyter-vim-complete` which does completion based on the runtime state of the kernel. — user202729, Dec 11 '21 at 06:09

score 74 · Answer 1 · edited Mar 09 '14 at 09:00

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Try Jedi! There's a Vim plugin at https://github.com/davidhalter/jedi-vim.

It works just much better than anything else for Python in Vim. It even has support for renaming, goto, etc. The best part is probably that it really tries to understand your code (decorators, generators, etc. Just look at the feature list).

edited Mar 09 '14 at 09:00

Peter Mortensen

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answered Sep 25 '12 at 10:33

Dave Halter

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I need to know the errors and `:ver` then. This may happen if you don't have vim with +python installed (e.g. certain windows vim editions). – Dave Halter Jan 31 '13 at 21:06
The error: Vim: Caught deadly signal SEGV Vim: Finished. Segmentation Fault – pfnuesel Feb 04 '13 at 12:15
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Yes, I'm sorry for that. But that's a VIM problem (old version): https://github.com/davidhalter/jedi-vim/issues/27 – Dave Halter May 13 '13 at 04:05
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Install this using [Vundle](https://github.com/VundleVim/Vundle.vim). Works like a charm! – gustafbstrom Feb 09 '17 at 10:04

Rafael Barbosa · Answer 2 · 2020-06-25T07:36:15.207

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As pointed out by in the comments, this answers is outdated. youcompleteme now supports python3 and jedi-vim no longer breaks the undo history.

Original answer below.

AFAIK there are three options, each with its disadvantages:

youcompleteme: unfriendly to install, but works nice if you manage to get it working. However python3 is not supported.
jedi-vim: coolest name, but breaks your undo history.
python-mode does a lot more the autocomplete: folding, syntax checking, highlighting. Personally I prefer scripts that do 1 thing well, as they are easier to manage (and replace). Differently from the two other options, it uses rope instead of jedi for autocompletion.

Python 3 and undo history (gundo!) are a must for me, so options 1 and 2 are out.

edited Jun 25 '20 at 07:36

answered Apr 06 '16 at 12:32

Rafael Barbosa

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Thanks for pointing out the downsides, that made the choice much easier, since I share the opinion about Python 3 and undo. – Zelphir Kaltstahl Oct 22 '16 at 17:07
It seems that rope doesn't support Python 3 (https://github.com/python-rope/rope/issues/57)? How to use the autocomplete function with python-mode and rope? Thanks. – Leo Jan 17 '18 at 11:10
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This is not accurate anymore. YouCompleteMe now supports Python 3. – jimh Mar 02 '20 at 18:06
also, jedi-vim doesn't break undo anymore (at least not in vim 8+) – beep_check Jun 24 '20 at 03:15

Xuan · Answer 3 · 2015-05-13T10:23:03.410

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This can be a good option if you want python completion as well as other languages. https://github.com/Valloric/YouCompleteMe

The python completion is jedi based same as jedi-vim.

edited May 13 '15 at 10:23

answered Nov 20 '13 at 10:29

Xuan

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score 7 · Answer 4 · edited May 23 '17 at 12:26

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I tried pydiction (didn't work for me) and the normal omnicompletion (too limited). I looked into Jedi as suggested but found it too complex to set up. I found python-mode, which in the end satisfied my needs. Thanks @klen.

edited May 23 '17 at 12:26

Community

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answered Feb 02 '13 at 10:22

Torsten Engelbrecht

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This is the one that worked for me. The other tools were too complicated to install. – max Apr 08 '15 at 19:49

score 2 · Answer 5 · answered Apr 04 '20 at 15:18

I found a good choice to be coc.nvim with the python language server.

It takes a bit of effort to set up. I got frustrated with jedi-vim, because it would always freeze vim for a bit when completing. coc.nvim doesn't do it because it's asyncronous, meaning that . It also gives you linting for your code. It supports many other languages and is highly configurable.

The python language server uses jedi so you get the same completion as you would get from jedi.

score 2 · Answer 6 · edited Apr 21 '21 at 08:59

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Use install coc.nvim package and CocInstall coc-pyright

if you are using vim-plug:

Plug 'neoclide/coc.nvim'
:PlugInstall
CocInstall coc-pyright

edited Apr 21 '21 at 08:59

fannheyward

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answered Apr 11 '21 at 08:20

Orif Milod

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score 0 · Answer 7 · answered May 09 '13 at 18:11

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I ran into this on my Mac using the MacPorts vim with +python. Problem was that the MacPorts vim will only bind to python 2.5 with +python, while my extensions were installed under python 2.7. Installing the extensions using pip-2.5 solved it.

answered May 09 '13 at 18:11

Devon Bleak

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Vim autocomplete for Python

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