Hi, 

I am able to iterate through the list of hypervisors and servers as follows. 

for hypervisor in self.connection.list_hypervisors():
for server in self.connection.compute.servers():

However, I could not find an API that returns the version of the OpenStack i.e. whether it is Stein, Train, or Ussuri. 

Openstack CLI client has command: openstack versions show

Thanks,
/anil.