Python 3 support?

[sloria]

I've compiled vim with python3 support, and I get the following error when opening a javascript file:

tern requires python support
tern requires python support
Error detected while processing /Users/sloria/.vim/bundle/tern_for_vim/after/ftplugin/javascript_tern.vim:

This is because the plugin is checking for has('python') but not for has('python3'). Does tern_for_vim support python 3?

[marijnh]

I believe the Python code was initially written with Python 3 compatibility in mind. Could you try removing the check (or making it also pass when python3 is present), and tell me if you run into any problems?

[sloria]

I changed the following in autoload/tern.vim:

if !has('python')  && !has('python3')
  echo 'tern requires python support'
  finish
endif

to make the script execute.

However, when I open a JS file, I get the following error:

Error detected while processing /Users/sloria/.vim/plugged/tern_for_vim/autoload/tern.vim:
line    8:
E319: Sorry, the command is not available in this version: pyfile /Users/sloria/.vim/plugged/tern_for
_vim/script/tern.py

[marijnh]

Try changing pyfile to py3file...

[sloria]

After changing to py3file, I get a number of Python 3-related errors (e.g. usage of urllib2) in tern.py.

I can work on a PR for Py2/3 compatibility this evening.

[marijnh]

The tern_for_sublime plugin has Python code that is known to run both in Python 2 and Python 3, you might want to steal some code from there.

[marijnh]

Fixed in #78

[netpoetica]

I am still seeing this on Mac OSX after installing this plugin:

tern requires python support
tern requires python support
Error detected while processing /Users/rosenbek/Desktop/git/dotvim/bundle/tern_for_vim/after/ftplugin/javascript_tern.vim:
line    1:
E117: Unknown function: tern#Enable
Press ENTER or type command to continue

Python 2.7.5 is available in my path, not sure why this issue would occur. I installed python3 via homebrew to ensure I have python3 in my path, and still, same error

Looks like my vim is compiled w/out python support, probably this is the reason:

VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Nov  4 2014 16:51:43)
MacOS X (unix) version
Included patches: 1-488
Compiled by Homebrew
Huge version without GUI.  Features included (+) or not (-):
+acl             +farsi           +mouse_netterm   +syntax
+arabic          +file_in_path    +mouse_sgr       +tag_binary
+autocmd         +find_in_path    -mouse_sysmouse  +tag_old_static
-balloon_eval    +float           +mouse_urxvt     -tag_any_white
-browse          +folding         +mouse_xterm     -tcl
++builtin_terms  -footer          +multi_byte      +terminfo
+byte_offset     +fork()          +multi_lang      +termresponse
+cindent         -gettext         -mzscheme        +textobjects
-clientserver    -hangul_input    +netbeans_intg   +title
+clipboard       +iconv           +path_extra      -toolbar
+cmdline_compl   +insert_expand   +perl            +user_commands
+cmdline_hist    +jumplist        +persistent_undo +vertsplit
+cmdline_info    +keymap          +postscript      +virtualedit
+comments        +langmap         +printer         +visual
+conceal         +libcall         +profile         +visualextra
+cryptv          +linebreak       -python          +viminfo
+cscope          +lispindent      -python3         +vreplace
+cursorbind      +listcmds        +quickfix        +wildignore
+cursorshape     +localmap        +reltime         +wildmenu
+dialog_con      -lua             +rightleft       +windows
+diff            +menu            +ruby            +writebackup
+digraphs        +mksession       +scrollbind      -X11
-dnd             +modify_fname    +signs           -xfontset
-ebcdic          +mouse           +smartindent     -xim
+emacs_tags      -mouseshape      -sniff           -xsmp
+eval            +mouse_dec       +startuptime     -xterm_clipboard
+ex_extra        -mouse_gpm       +statusline      -xterm_save
+extra_search    -mouse_jsbterm   -sun_workshop    -xpm
   system vimrc file: "$VIM/vimrc"
     user vimrc file: "$HOME/.vimrc"
 2nd user vimrc file: "~/.vim/vimrc"
      user exrc file: "$HOME/.exrc"
  fall-back for $VIM: "/usr/local/share/vim"
Compilation: /usr/bin/clang -c -I. -Iproto -DHAVE_CONFIG_H   -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk -DMACOS_X_UNIX  -Os -w -pipe -march=native -mmacosx-version-min=10.9 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1      
Linking: /usr/bin/clang   -L. -L/usr/local/lib -L/usr/local/lib -Wl,-headerpad_max_install_names -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk -o vim        -lm  -lncurses -liconv -framework Cocoa   -fstack-protector -L/usr/local/lib  -L/System/Library/Perl/5.16/darwin-thread-multi-2level/CORE -lperl    -lruby.2.0.0 -lobjc 

[marijnh]

Looks like my vim is compiled w/out python support, probably this is the reason:

Indeed, that's the problem.