#!/usr/bin/env python

#9.4 Write a program to read through the mbox-short.txt and figure out who has the 
#sent the greatest number of mail messages. The program looks for 'From ' lines and 
#takes the second word of those lines as the person who sent the mail. The program 
#creates a Python dictionary that maps the sender's mail address to a count of the 
#number 
#of times they appear in the file. After the dictionary is produced, the program reads through
#the dictionary using a maximum loop to find the most prolific committer.

name = raw_input("Enter file:")
if len(name) < 1 : name = "mbox-short.txt"
handle = open(name)
