import re

def count_patt(fname, patt):
result = {}
cpatt = re.compile(patt)
fobj = open(fname)
for line in fobj:
m = cpatt.search(line)
if m:
key = m.group()
if key not in result:
result[key] = 1
else:
result[key] += 1
fobj.close()
return result

if name == 'main':
fname = '/var/log/httpd/access_log'
ip_patt = '^(\d+.){3}\d+'
br_patt = 'Firefox|Chrome|MSIE'
print count_patt(fname, ip_patt)
print count_patt(fname, br_patt)