How do I use python interface of Stanford NER(named entity recogniser)?

I want to use Stanford NER in python using pyner library. Here is one basic code snippet.

import ner 
tagger = ner.HttpNER(host='localhost', port=80)
tagger.get_entities("University of California is located in California, United States")

When I run this on my local python console(IDLE). It should have given me an output like this

  {'LOCATION': ['California', 'United States'],
 'ORGANIZATION': ['University of California']}

but when I execut this, it showed empty brackets. I am actually new to all this.