Python - Custom data Objects: Bundling code with data(list(pop method), dictionary(key, value))

Head First Python
( O'Reilly Media)
Paul Barry (著)

開発環境

• OS X Mavericks - Apple(OS)
• Emacs (CUI)、BBEdit - Bare Bones Software, Inc. (GUI) (Text Editor)
• Python (プログラミング言語)

Head First Python (Paul Barry(著)、 O'Reilly Media )のChapter 6(Custom data Objects: Bundling code with data)、SHARPEN YOUR PENCIL(p.185)を解いてみる。

SHARPEN YOUR PENCIL(p.185)

コード(BBEdit)

sample185.py

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

def sanitize(time_string):
    if '-' in time_string:
        spliter = '-'
    elif ':' in time_string:
        spliter = ':'
    else:
        return time_string

    (mins, secs) = time_string.split(spliter)
    return mins + '.' + secs

def getCoachData(filename):
    try:
        with open(filename) as f:
            data = f.readline()
        data =  data.strip().split(',')
        return {'name':data.pop(0), 'dob': data.pop(0),
                'times': sorted(set(sanitize(t) for t in data))[:3]}
    except IOError as ioerr:
        print('File error: {0}'.format(ioerr))
        return None

for filename in ['sarah2.txt', 'james2.txt', 'julie2.txt', 'mikey2.txt']:
    data = getCoachData(filename)
    print("{0}'s fastest times are: {1}".format(
        data['name'], data['times']))

入出力結果(Terminal)

$ ./sample185.py
Sarah Sweeney's fastest times are: ['2.18', '2.21', '2.22']
James Lee's fastest times are: ['2.01', '2.16', '2.22']
Julie Jones's fastest times are: ['2.11', '2.23', '2.59']
Mikey McManus's fastest times are: ['2.22', '2.31', '2.38']
$