matplotlib Gtk3

[Predrag Punosevac]

I am having issue with matplotlib on 5.7 release. Trying to 

import matplotlib.pyplot as plt

gives 

     11 except ImportError:
---> 12     raise ImportError("Gtk3 backend requires pygobject to be 
installed.")
     13 
     14 try:

ImportError: Gtk3 backend requires pygobject to be installed.


Can anyone confirm this?

Predrag