Python - Storing Data Using Other Collection Types(set, elements)

Practical Programming
An Introduction to Computer Science
Using Python 3
(Pragmatic Programmers)
(Pragmatic Bookshelf)
Paul Gries (著) Jennifer Campbell (著)
Jason Montojo (著) Lynn Beighley (編集)

開発環境

• OS X Mavericks - Apple(OS)
• Emacs (CUI)、BBEdit - Bare Bones Software, Inc. (GUI) (Text Editor)
• Python 3.4 (プログラミング言語)

Practical Programming: An Introduction to Computer Science Using Python 3 (Pragmatic Programmers) (Paul Gries (著)、Jennifer Campbell (著)、Jason Montojo (著)、Lynn Beighley (編集)、Pragmatic Bookshelf)のChapter 11(Storing Data Using Other Collection Types)、11.8(Exercises) 3.を解いてみる。

11.8(Exercises) 3.

コード(BBEdit)

sample3.py

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

def getAllAuthorNames(filenames):
    names = set()
    for filename in filenames:
        with open(filename) as f:
            for line in f:
                if line.lower().startswith('author'):
                    names.add(line[6:].strip())
    return names

if __name__ == '__main__':
    import glob
    filenames = glob.glob('*.ent')
    print(getAllAuthorNames(filenames))

入出力結果(Terminal, IPython)

$ ./sample3.py
{'C.XU,W.TEMPEL,K.LIU,J.R.WALKER,C.BOUNTRA,C.H.ARROWSMITH,A.M.EDWARDS,', 'X.JI,C.TANG,Q.ZHAO,W.WANG,Y.XIONG', 'D.W.TOH,L.SUN,J.TAN,Y.CHEN,L.Z.M.LAU,W.HONG,E.C.Y.WOON,Y.G.GAO', '2 J.MIN,STRUCTURAL GENOMICS CONSORTIUM (SGC)'
$