9-3

#! /usr/bin/env python3.2
# -*- coding: utf-8 -*-

# main.py
""" Task: Exercise 9.3
    Write a program that categorizes each mail message by which day of the week
    the commit was done. To do this look for lines which start with “From”,
    then look for the third word and then keep a running count of each of the
    days of the week. At the end of the program print out the contents of your
    dictionary (order does not matter).

    Sample Line:
    From stephen.marquard@uct.ac.za Sat Jan 5 09:14:16 2008

    Sample Execution:
    python dow.py
    Enter a file name: mbox-short.txt
    {'Fri': 20, 'Thu': 6, 'Sat': 1}
"""

''' Main '''
# Open file
try:
    fhand = open('mbox-short.txt')
except:
    print("File not found!")
    exit()

week = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]
days = dict()
for line in fhand:
    words = line.split()
    # print('Debug:', words)
    if len(words) >= 3 and words[0] == 'From' and words[2] in week[:]:
        days[words[2]] = days.get(words[2], 0) + 1

for i in week:          # Print-out
    if i in days:
        print(str(i) + ": " + str(days[i]))
    else:
        print(str(i) + ": 0")

# Close file
try:
    fhand.close()
except:
    exit()