[CentOS] where to get python-dbus?

When trying to use some third-party software (from HP written in 
python), it says "python-dbus not installed".  Yet, there's

$ rpm -q dbus-python
dbus-python-0.70-9.el5_4

Are there really two such  distinct libraries...? or is this a coding 
error?  (Obviously I'm no python coder.)

$ cat /etc/redhat-release
CentOS release 5.11 (Final)

tnx