Python - Py Crust: Code Structures(function, decorator)

Introducing Python
Modern Computing in Simple Packages
(O'Reilly Media)
Bill Lubanovic (著)

開発環境

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

Introducing Python: Modern Computing in Simple Packages(Bill Lubanovic (著)、 O'Reilly Media)のChapter 4(Py Crust: Code Structures)、Things to Do 4.10.を解いてみる。

Things to Do 4.10.

コード(BBEdit)

sample10.py

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

def test(func):
    def new_function(*args, **kwargs):
        print(func.__name__)
        print('start')        
        result = func(*args, **kwargs)
        print('end')
        return result
    return new_function

@test
def f(msg):
    print(msg)

@test
def g(a, b):
    return a if a > b else b

result = f('Hello, world!')
print(result)

result = g(5, 10)
print(result)

入出力結果(Terminal, IPython)

$ ./sample10.py
f
start
Hello, world!
end
None
g
start
end
10
$