NameError: name 'oxm' is not defined

[koboveb]

For CentOS 7:
$ openxenmanager
Traceback (most recent call last):
File "/usr/bin/openxenmanager", line 4, in
import('pkg_resources').run_script('openxenmanager==0.1b1', 'openxenmanager')
File "/usr/lib/python2.7/site-packages/pkg_resources/init.py", line 654, in run_script
self.require(requires)[0].run_script(script_name, ns)
File "/usr/lib/python2.7/site-packages/pkg_resources/init.py", line 1434, in run_script
exec(code, namespace, namespace)
File "/usr/lib/python2.7/site-packages/openxenmanager-0.1b1-py2.7.egg/EGG-INFO/scripts/openxenmanager", line 1, in
oxm.pyw
NameError: name 'oxm' is not defined