今さらPython3(8) - 文字列操作の続き

この本の第2章を引き続き読んでます。

入門 Python 3

str()関数を使う

>>> str(98.6)
'98.6'
>>> str(1.0e4)
'10000.0'
>>> str(True)
'True'
>>>
>>> palindrome = 'A man,\nA plan,\nA canal:\nPanama.'
>>> print(palindrome)
A man,
A plan,
A canal:
Panama.
>>>

\nで改行。このあたりは、「安心してください。知ってますよ」って感じですね。

>>> print('\tabc')
        abc
>>> print('a\tbc')
a       bc
>>> print('ab\tc')
ab      c
>>> print('abc\t')
abc
>>>

\tはタブを表すと。最後のヤツは視認できないけどね。

>>> test1mony = "\"I did nothing!\" he said. \"Not that either! Or the other thi
ng.\""
>>> print(test1mony)
"I did nothing!" he said. "Not that either! Or the other thing."
>>> test1mony
'"I did nothing!" he said. "Not that either! Or the other thing."'
>>>
>>> fact = "The world's largest rubber duck was 54'2\" by 67'7\" by 105'"
>>> print(fact)
The world's largest rubber duck was 54'2" by 67'7" by 105'
>>> speech = 'Today we honor our friend, the backslash: \\.'
>>> print(speech)
Today we honor our friend, the backslash: \.

ダブルクオーテーション(")とかバックスラッシュ(\)自体をエスケープする場合はこれと。

文字列の足し算

>>> 'Release the kraken!' + 'At once!'
'Release the kraken!At once!'
>>> "My word! " "A gentlemen caller!"
'My word! A gentlemen caller!'
>>> a = "My word!" "A gentlemen caller!"
>>> a
'My word!A gentlemen caller!'

文字列同士をプラス(+)でつなぐのは知ってたけど、ただ並べるだけで1つになっているのは意外。

>>> a = 'Duck.'
>>> b = a
>>> c = 'Grey Duck!'
>>> a + b + c
'Duck.Duck.Grey Duck!'
>>> print(a, b, c)
Duck. Duck. Grey Duck!

最後に文字列のかけ算もできるよと。

>>> start = 'Na ' * 4 + '\n'
>>> middle = 'Hey ' * 3 + '\n'
>>> end = 'Goddbye.'
>>> print(start + start + middle + end)
Na Na Na Na
Na Na Na Na
Hey Hey Hey
Goddbye.
>>>

（つづく）