## 2019年11月11日月曜日

### Python - Storing Collections of Data Using Lists - nested list, slicing, indexing, positive indices

Practical Programming: An Introduction to Computer Science Using Python 3.6 (Paul Gries(著)、Jennifer Campbell(著)、Jason Montojo(著)、Pragmatic Bookshelf)のChapter 8(Storing Collections of Data Using Lists)、Exercise 10の解答を求めてみる。

コード

```#!/usr/bin/env python3
from unittest import TestCase, main

units = [['km', 'miles', 'league'],
['kg', 'pound', 'stone']]

class MyTestCase(TestCase):
def test_a(self):
self.assertEqual(units[0], ['km', 'miles', 'league'])

def test_b(self):
self.assertEqual(units[len(units) - 1], ['kg', 'pound', 'stone'])

def test_c(self):
self.assertEqual(units[0][0], 'km')

def test_d(self):
self.assertEqual(units[1][0], 'kg')

def test_e(self):
self.assertEqual(units[0][1:], ['miles', 'league'])

def test_f(self):
self.assertEqual(units[1][:2], ['kg', 'pound'])

if __name__ == '__main__':
main()
```

```% ./sample10.py -v
test_a (__main__.MyTestCase) ... ok
test_b (__main__.MyTestCase) ... ok
test_c (__main__.MyTestCase) ... ok
test_d (__main__.MyTestCase) ... ok
test_e (__main__.MyTestCase) ... ok
test_f (__main__.MyTestCase) ... ok

----------------------------------------------------------------------
Ran 6 tests in 0.000s

OK
%
```