pygobject replacement?

[Linan]

Hi,

I have a python library which is written years ago and heavily using
pygobject in binding signal/events (No GUI stuffs involve). Now I have
to use it in a totally different environment which doesnot allow to
install glib, gtk and gobject. Surely I don't want to change the whole
structure of handling signals/events. Is there any pure python
pygobject replacement that I can switch to, and change only functions
like emit?

Any suggestion is appreciated.