Mine

import string
f = open("mess.sgml","r")
str = f.read()
dict = []
cnt = 0
for char in str:
	cnt += 1
	print cnt
	if len(dict) == 0:
		dict += [[char,0]]
	for i in dict:
		print dict[i][0]
		if char == dict[i][0]:
			dict[i][1] = dict[i][1] + 1
		else:
			dict += [[char,0]]
print dict