Disable automatic (preview) window (buffer) with a function signature

Question

Every time I click dot, the function signature appears in a separate buffer.

import sys

sys.argv   # in this moment I have a separate buffer opened with sys.argv signature

Then this buffer exists until manually closed.

I'd like to have it only when I press ctrl-K. Or at least it disappears when I exit insert mode...

Answer 1

Realize that this buffer is called preview window. Thus the :pc or simply <C-w-C-z> works to close it

CTRL-W CTRL-Z                   *CTRL-W_CTRL-Z* *:pc* *:pclose*
:pc[lose][!]    Close any "Preview" window currently open.  When the 'hidden'
        option is set, or when the buffer was changed and the [!] is
        used, the buffer becomes hidden (unless there is another
        window editing it).  The command fails if any "Preview" buffer
        cannot be closed.  See also |:close|.

Answer 2

Finally I found the solution:

add

I added youCompleteMe plugin:

Plugin 'Valloric/YouCompleteMe'

and

let g:ycm_autoclose_preview_window_after_completion=1

Answer 3

This is the default behavior of the Rope AutoCompletion used in Python-Mode.

https://github.com/python-mode/python-mode/blob/01c3131343aaa3c76f8cb656b5e9f54ac90ca04b/doc/pymode.txt#L476

If you dont like the behavior, you can turn it off using

let g:pymode_rope_complete_on_dot = 1

The reason its working when you use YouCompleteMe, is because YouCompleteMe is turning off the whole python-mode plugin altogehter. So while you can get ride of this issue, you will lose all the other features of python-mode as well.