How to create a mapping to execute python code from Vim?

Question

Here's the steps I follow to execute python code from Vim:

I write a python source code using Vim
I execute it via :w !python

and I'd like a shorter way to execute the code, so I searched the Internet for a shortcut key such as this map:

autocmd FileType python nnoremap <buffer> <F9> :exec '!python' shellescape(@%, 1)<cr>

and added it to the _vimrc file. But when I hit F9, the following error message appears:

Here is the relevant text in the image above:

python: can't open file ''D:/py2.py'': [Errno 22] Invalid argument
shell returned 2.

I have already searched the Internet, but I have not got any result.

I use gVim 8.0 in Windows 10, if that helps.

Screenshots are evil (especially links to screenshots). Please copy-paste (or manually write) error in your question. — Jérôme
– Jérôme, Commented Oct 12, 2016 at 10:58

LycuiD · Accepted Answer · 2017-07-14 07:59:24Z

2

Interacting with command-line through vim, the much preferred way would be with exclamation.
Instead of:

:exec '!python' shellescape(@%, 1)<cr>

Try doing the easy way:

:update<bar>!python %<CR>

here in the above code:
update save file if modified (preferred) or can also use w.
<bar> pipe commands.
!python % will run the file as python filename.

So basically, put this in your .vimrc file, and that'll do it:

autocmd FileType python nnoremap <buffer> <F9> :update<bar>!python %<CR>

edited Jul 14, 2017 at 7:59

answered Oct 12, 2016 at 11:02

LycuiD

2,5751 gold badge21 silver badges28 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

J.Neue Over a year ago

What should I add to the _vimrc file?Sorry for I can not the ":update<bar>!python %<CR>" ’s meaning you have post.Is this sentence means that I should type :w !python at the bottom of the vim window?

J.Neue Over a year ago

I am sorry .The former response lost a "understand".

LycuiD Over a year ago

autocmd FileType python nnoremap <buffer> <F9> :update<bar>!python %<CR>, put this in you .vimrc file, and you are good to go.

J.Neue Over a year ago

,Thank you .After adding the code you gave,the cmd returns good result.

Collectives™ on Stack Overflow

How to create a mapping to execute python code from Vim?

1 Answer 1

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related