Using blue print

import xml.etree.cElementTree as ET
from collections import defaultdict
import re

osm_file = open("chicago_abbrev.osm", "r")

street_type_re = re.compile(r'\S+\.?$', re.IGNORECASE)
street_types = defaultdict(int)

def audit_street_type(street_types, street_name):
	m = street_type_re.search(street_name)
	if m:
		street_type = m.group()
		street_types[street_type] += 1

def print_sorted_dict(d):
	keys = d.keys()
	keys = sorted(keys, key=lambda s: s.lower())
	for k in keys:

def is_street_name(elem):
	return (elem.tag == "tag") and (elem.attrib['k'] == "addr:street")

def audit():
	for event, elem in ET.iterparse(osm_file):
		if is_street_name(elem):
			audit_street_type(street_types, elem.attrib['v'])
	print_sorted_dict(street_types)

if __name__ == '__main__':
	audit()