DeprecationWarning: The imp module is deprecated in favour of importlib;

[9mm]

• Macvim 8.1-149_1
• VIM - Vi IMproved 8.1

Expected behavior:

Zero warnings

Actual behavior:

Upon typing any key after going into insert mode, it gives this warning.

Steps to reproduce

Open vim, enter insert mode, type any key.

[0x00000024]

It seems that the python3.7 update has caused this issue.

I'm using vim and fixed with this command:
brew reinstall vim --with-python@2

If you are using macvim, maybe you can try this command:
brew reinstall macvim --with-override-system-vim --with-python@2

[alaaibrahim]

This will happen when running any python3 (while using python3.7) in vim. not specific to Ultisnips.

See vim/vim#3117

[dbmrq]

To anybody else who's having this issue, I think this is the best workaround:

Regardless of installed plugins, silently execute python3 once on the top of your vimrc:

if has('python3')
  silent! python3 1
endif

[lacygoill]

The issue has been fixed in Vim with the patch 8.1.0201.