How do I install vim on OSX with Python 3 support?

In the google searches I’ve done, the command I should be using is brew install vim --with-python3, which succeeds without error, but then vim --version reports Python 3 as unavailable.

k162:~ asday$ brew install vim --with-python3
==> Using the sandbox
==> Downloading https://github.com/vim/vim/archive/v7.4.2210.tar.gz
Already downloaded: /Users/asday/Library/Caches/Homebrew/vim-7.4.2210.tar.gz
==> ./configure --prefix=/usr/local --mandir=/usr/local/Cellar/vim/7.4.2210/share/man --enable-multibyte --with-tlib=ncurses --enable-cscope --with-compiledby=Homebrew --enable-p
==> make
==> make install prefix=/usr/local/Cellar/vim/7.4.2210 STRIP=true
🍺  /usr/local/Cellar/vim/7.4.2210: 1,732 files, 28.5M, built in 52 seconds
k162:~ asday$ vim --version
VIM - Vi IMproved 7.3 (2010 Aug 15, compiled Oct 27 2015 16:22:14)
Compiled by root@apple.com
Normal version without GUI.  Features included (+) or not (-):
-arabic +autocmd -balloon_eval -browse +builtin_terms +byte_offset +cindent
-clientserver -clipboard +cmdline_compl +cmdline_hist +cmdline_info +comments
-conceal +cryptv +cscope +cursorbind +cursorshape +dialog_con +diff +digraphs
-dnd -ebcdic -emacs_tags +eval +ex_extra +extra_search -farsi +file_in_path
+find_in_path +float +folding -footer +fork() -gettext -hangul_input +iconv
+insert_expand +jumplist -keymap -langmap +libcall +linebreak +lispindent
+listcmds +localmap -lua +menu +mksession +modify_fname +mouse -mouseshape
-mouse_dec -mouse_gpm -mouse_jsbterm -mouse_netterm -mouse_sysmouse
+mouse_xterm +multi_byte +multi_lang -mzscheme +netbeans_intg -osfiletype
+path_extra -perl +persistent_undo +postscript +printer -profile +python/dyn
-python3 +quickfix +reltime -rightleft +ruby/dyn +scrollbind +signs
+smartindent -sniff +startuptime +statusline -sun_workshop +syntax +tag_binary
+tag_old_static -tag_any_white -tcl +terminfo +termresponse +textobjects +title
 -toolbar +user_commands +vertsplit +virtualedit +visual +visualextra +viminfo
+vreplace +wildignore +wildmenu +windows +writebackup -X11 -xfontset -xim -xsmp
 -xterm_clipboard -xterm_save
   system vimrc file: "$VIM/vimrc"
     user vimrc file: "$HOME/.vimrc"
      user exrc file: "$HOME/.exrc"
  fall-back for $VIM: "/usr/share/vim"
Compilation: gcc -c -I. -D_FORTIFY_SOURCE=0 -Iproto -DHAVE_CONFIG_H -arch i386 -arch x86_64 -g -Os -pipe
Linking: gcc -arch i386 -arch x86_64 -o vim -lncurses

And doing :py3 print("") within vim returns E319: Sorry, the command is not available in this version.

What is it I’m doing wrong? Do I need to compile vim myself?

Answer

brew remove vim
brew cleanup
brew install vim --with-python3

Attribution
Source : Link , Question Author : Adam Barnes , Answer Author : 8bittree