Python - Working with Text(+(operator), str class, __add__ method)

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 4(Working with Text)、4.7(Exercises) 6.を解いてみる。

4.7(Exercises) 6.

入出力結果(Terminal, IPython)

$ ipython
Python 3.4.1 (default, May 21 2014, 01:39:38) 
Type "copyright", "credits" or "license" for more information.

IPython 2.1.0 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: first = 'John'

In [2]: last = 'Doe'

In [3]: print(last + ', ' + first) # Doe, John
Doe, John

In [4]: print('{0}, {1}'.format(last, first))
Doe, John

In [5]: name = last + ', ' + first

In [6]: name = 'Doe, John'

In [7]: name = last + ', ' + first

In [8]: name == 'Doe, John'
Out[8]: True

In [9]: name = '{0}, {1}'.format(last, first)

In [10]: name == 'Doe, John'
Out[10]: True

In [11]: quit()
$