Tab and spaces in vi vim - RayGutt/PersonalWiki GitHub Wiki

Options to type 4 spaces instead of the tab ^I characters, which is not interpreted by python3 as indentation:

:set tabstop=4
:set shiftwidth=4
:set expandtab
:set autoindent

Or:

:set expandtab ts=4 sw=4 ai

You can replace all the tabs with spaces in the entire file with

:%retab

To see special characters:

:set list