Python -functions(def statement)

Head First Programming
A learner's guide to programming
using the Python language
( O'Reilly Media; )
David Griffiths (著) 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 Programming A learner's guide to programming using the Python language (David Griffiths(著)、Paul Barry(著)、 O'Reilly Media; )のChapter 3(functions: Let's get organized)、Code Magnets(p.83)を解いてみる。

Code Magnets(p.83)

コード(BBEdit)

sample83.py

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

import urllib.request

def getPrice():
    page = urllib.request.urlopen(
        'http://www.beans-r-us.appspot.com/prices.html')
    text = page.read().decode('utf8')
    where = text.find('>$')
    start_of_price = where + 2
    end_of_price = start_of_price + 4
    print(text[start_of_price:end_of_price])

if __name__ == '__main__':
    getPrice()

入出力結果(Terminal)

$ ./sample83.py 
6.55
$