请问pygtk-demo的问题

coderaka

运行pygtk-demo就出错，显示
Traceback (most recent call last):
  File "/usr/local/bin/pygtk-demo", line 7, in <module>
    execfile(os.path.join(pygtklibdir, "pygtk-demo.py"))
  File "/usr/local/lib/pygtk/2.0/pygtk-demo.py", line 18, in <module>
    import gobject
ImportError: No module named gobject

我已经安装了pyobject-2.14.1和pygtk-2.12.1