Python - Types and Operations(The basics)

Learning Python
(Oreilly & Associates Inc)
Mark Lutz (著)
(邦訳版)

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)

Learning Python (Mark Lutz (著)、Oreilly & Associates Inc)のPART II.(Types and Operations)、Test Your Knowledge: Part II Exercises、1(The basics)を解いてみる。

その他参考書籍

• Pythonチュートリアル 第2版
• Python クックブック 第2版 (原書(最新版))

1(The basics)

入出力結果(Terminal)

$ python3
Python 3.3.3 (default, Dec  2 2013, 01:40:21) 
[GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.2.79)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> 2 ** 16 # 2の16乗
65536
>>> 2 // 5, 2 / 5 # (0, 0.4)
(0, 0.4)
>>> 'spam' + 'eggs' # 'spameggs'
'spameggs'
>>> s='ham'
>>> 'eggs ' + s # 'eggs ham'
'eggs ham'
>>> s * 5 # 'hamhamhamhamham'
'hamhamhamhamham'
>>> s[:0] # ''
''
>>> 'green {} and {}'.format('eggs', s) # green eggs and ham'
'green eggs and ham'
>>> ('x',)[0] # 'x'
'x'
>>> ('x', 'y')[1] # 'y'
'y'
>>> l = [1,2,3] + [4,5,6] # [1,2,3,4,5,6]
>>> l
[1, 2, 3, 4, 5, 6]
>>> l[:] # [1,2,3,4,5,6]
[1, 2, 3, 4, 5, 6]
>>> l[:0] # []
[]
>>> l[-2] # [5]
5
>>> l[-2:] # [5,6]
[5, 6]
>>> ([1,2,3] + [4,5,6])[2:4] # [3,4]
[3, 4]
>>> [l[2], l[3]] # [3, 4]
[3, 4]
>>> l.reverse(); l # [6,5,4,3,2,1]
[6, 5, 4, 3, 2, 1]
>>> l.sort(); l # [1,2,3,4,5,6]
[1, 2, 3, 4, 5, 6]
>>> l.index(4) # 3
3
>>> {'a':1, 'b':2}['b'] # 2
2
>>> d={'x':1, 'y':2, 'z':3}
>>> d['w'] = 0
>>> d['x'] = d['w']
>>> d[(1,2,3)] = 4
>>> list(d.keys())
['z', 'y', 'x', 'w', (1, 2, 3)]
>>> list(d.values()) # [3, 2, 0, 0, 4]
[3, 2, 0, 0, 4]
>>> (1, 2, 3) in d # True
True
>>> [[]]
[[]]
>>> ['', [], (), {}, None]
['', [], (), {}, None]
>>> quit()
$