Python script for deleting VM using Nova API

This is sample python script that delete virtual machines, keys and security groups where security group has a same name as keypair

import os, sys, time
from pprint import pprint
from novaclient.v1_1 import client

nt = client.Client("username", "pwd", "test", "http://192.168.0.155:1111/v1.1/", service_type="compute")
a = nt.servers.list()
for s in a:
        print s.name + " | "  + s.key_name  + " | " + str(s.addresses)
        varDelete = raw_input("Delete machine, keys and groups (y/n): ")
        if varDelete == "y":

                print "deleting"
                print
                print "checking if there is an IP for release"

                for nets in s.addresses:
                        pprint (s.addresses[nets])
                        for a in s.addresses[nets]:
                                address = str(a["addr"])
                                print "checking address " + address
                                existInFloating=[checked for checked in nt.floating_ips.list() if checked.ip == address]
                                if len(existInFloating) > 0:
                                        print "exist"
                                        s.remove_floating_ip(address)
                                        existInFloating[0].delete()
                                        print "ip address released"
                                else:
                                        print "not exist"

                nt.servers.delete(s)

                keyname = s.key_name
                if keyname != "":
                        print "deleting keyname and group: " + keyname
                        selectedKeyPairs = [k for k in nt.keypairs.list() if k.name == keyname]
                        if len(selectedKeyPairs) > 0:
                                selectedKeyPairs[0].delete()

                        selectedGroups = [k for k in nt.security_groups.list() if k.name == keyname]
                        if len(selectedGroups) > 0:
                                time.sleep(5)
                                selectedGroups[0].delete()

                print "deleted"
        else:
                print "skipping"