全員向けPython Chapter 10

Chpater 10

10.2 Write a program to read through the mbox-short.txt and figure out the distribution by hour of the day for each of the messages.
You can pull the hour out from the 'From ' line by finding the time and then splitting the string a second time using a colon.
From [email protected] Sat Jan 5 09:14:16 2008
Once you have accumulated the counts for each hour, print out the counts, sorted by hour as shown below.

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

dic = dict()
for line in handle :
    if line.startswith('From'):
        line = line.rstrip()
        words = line.split()
        words = words[5:6]
        for time in words:
            time = time.rstrip()
            hour = time[0:2]
            dic[hour] = dic.get(hour,0) + 1

lst = sorted(dic.items())
for key, value in lst:
    print(key, value)