gtk problem on macosx

i installed gtk using homebrew

brew install gtk

brew info gtk

gtk+ 2.20.1

http://www.gtk.org/

Depends on: pkg-config, glib, jpeg, libtiff, pango, jasper, atk 
/usr/local/Cellar/gtk+/2.20.1 (1051 files, 33M)

http://github.com/mxcl/homebrew/commits/master/Library/Formula/gtk+.rb

after that, i add LD_LIBRARY_PATH and PKG_CONFIG_PAT开发者_运维问答H to /etc/bashrc

but now i using

import gtk

in python,

ImportError: No module named gtk

any help is appreciated

PyGTK is a separate project. Install that as well.