TorDNSEL consensus comparing

#!/usr/bin/env python

import json
import operator
import os

from stem.descriptor import parse_file
from stem.exit_policy import AddressType

cached_consensus_filepath = os.path.expandvars('$HOME/.tor/cached-consensus')

# Be sure to get the latest consensus doc, e.g.
# rsync metrics.torproject.org::metrics-recent/relay-descriptors/consensuses/2013-09-26-00-00-00-consensus data/latest_consensus
latest_consensus_filepath = 'data/latest_consensus'

missing = 0
ok = 0
total = 0

cached_routers = {}

for router in parse_file(cached_consensus_filepath,
                         "network-status-consensus-3 1.0"):
    cached_routers[router.fingerprint] = 1

for router in parse_file(latest_consensus_filepath,
                         "network-status-consensus-3 1.0"):
    if router.fingerprint in cached_routers:
        # OK
        ok += 1
    else:
        # Missing
        missing += 1
        print "Missing fingerprint: %s" % router.fingerprint
    total += 1

print ""
print "Missing: %d" % missing
print "OK(Found): %d" % ok
print "Total: %d" % total