Python - Repeating Code Using Loops - list, for loop

Practical Programming
楽天ブックス 紀伊国屋書店

開発環境

• macOS Catalina - Apple (OS)
• Emacs (Text Editor)
• Windows 10 Pro (OS)
• Visual Studio Code (Text Editor)
• Python 3.7 (プログラミング言語)

Practical Programming: An Introduction to Computer Science Using Python 3.6 (Paul Gries(著)、Jennifer Campbell(著)、Jason Montojo(著)、Pragmatic Bookshelf)のChapter 9(Repeating Code Using Loops)、Exercise 1、2、3の解答を求めてみる。

コード

#!/usr/bin/env python3
from unittest import TestCase, main
from test.support import captured_stdout


class MyTestCase(TestCase):
    def test1(self):
        celegans_phenotypes = ['Emb', 'Him', 'Unc', 'Lon', 'Dpy', 'Sma']
        s = '''Emb
Him
Unc
Lon
Dpy
Sma
'''
        with captured_stdout() as stdout:
            for t in celegans_phenotypes:
                print(t)
        self.assertEqual(stdout.getvalue(), s)

    def test2(self):
        half_lives = [87.74, 24110.0, 653.0, 14.4, 376000.0]

        s = '87.74 24110.0 653.0 14.4 376000.0 '
        with captured_stdout() as stdout:
            for l in half_lives:
                print(l, end=' ')
        self.assertEqual(stdout.getvalue(), s)

    def test3(self):
        whales = [5, 4, 7, 3, 2, 3, 2, 6, 4, 2, 1, 7, 1, 3]
        more_wahles = []
        for whale in whales:
            more_wahles.append(whale + 1)
        self.assertEqual(
            more_wahles, [6, 5, 8, 4, 3, 4, 3, 7, 5, 3, 2, 8, 2, 4])


if __name__ == '__main__':
    main()

入出力結果(Zsh、PowerShell、Terminal、Jupyter(IPython))

% ./sample1.py -v
test1 (__main__.MyTestCase) ... ok
test2 (__main__.MyTestCase) ... ok
test3 (__main__.MyTestCase) ... ok

----------------------------------------------------------------------
Ran 3 tests in 0.000s

OK
%