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kyungkoo/py-coding-interview-ch2-test.py

Last active April 4, 2021 15:22
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Revisions

  1. kyungkoo revised this gist Apr 4, 2021. 1 changed file with 15 additions and 1 deletion.
    16 changes: 15 additions & 1 deletion py-coding-interview-ch2-test.py
    View file
    Original file line number Diff line number Diff line change
    @@ -37,6 +37,20 @@ def test_list_comprehension_make_dict(self):
    self.assertEqual(dict2["k1"], "v1")
    self.assertEqual(dict2["k2"], "v2")

    def get_natural_number(self):
    n = 0
    while True:
    # generator 생성 시점에 이미 n +=1 한번 수행된다는 점을 기억하자
    n += 1
    yield n

    def test_generator(self):
    g = self.get_natural_number()
    for idx in range(0, 100):
    value = next(g)

    self.assertEqual(value, idx+1)


    if __name__ == "__main__":
    unittest.main()
    unittest.main()
  2. kyungkoo revised this gist Apr 4, 2021. 1 changed file with 19 additions and 6 deletions.
    25 changes: 19 additions & 6 deletions py-coding-interview-ch2-test.py
    View file
    Original file line number Diff line number Diff line change
    @@ -1,29 +1,42 @@
    import unittest


    class Ch2Test(unittest.TestCase):

    # range 정의는 https://docs.python.org/3/library/functions.html#func-range 참고
    def test_ragne(self):
    # 1 ~ 4
    wrong = [n for n in range(1,4)]
    wrong = [n for n in range(1, 4)]
    self.assertEqual(3, len(wrong))

    expect = [1,2,3,4]
    expect = [1, 2, 3, 4]
    start = 1
    stop = 4 + 1 # stop 값은 원하는 값 + 1
    stop = 4 + 1 # stop 값은 원하는 값 + 1
    actual = [n for n in range(start, stop)]

    self.assertEqual(4, len(actual))
    self.assertEqual(actual, expect)


    def test_list_comprehension(self):
    # 1~10 중 홀수 에 2 를 곱한다
    expect = [2, 6, 10, 14, 18]
    actual = [n * 2 for n in range(1,10 + 1) if n % 2 == 1]
    actual = [n * 2 for n in range(1, 10 + 1) if n % 2 == 1]

    self.assertEqual(actual, expect)


    # 딕셔너리 생성도 가능
    def test_list_comprehension_make_dict(self):
    dict1 = {"k1": "v1",
    "k2": "v2",
    "k3": "v3"
    }

    dict2 = {key: value for key, value in dict1.items() if value != "v3"}

    self.assertEqual(len(dict2), 2)
    self.assertEqual(dict2["k1"], "v1")
    self.assertEqual(dict2["k2"], "v2")


    if __name__ == "__main__":
    unittest.main()
  3. kyungkoo created this gist Apr 3, 2021.
    29 changes: 29 additions & 0 deletions py-coding-interview-ch2-test.py
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,29 @@
    import unittest

    class Ch2Test(unittest.TestCase):

    # range 정의는 https://docs.python.org/3/library/functions.html#func-range 참고
    def test_ragne(self):
    # 1 ~ 4
    wrong = [n for n in range(1,4)]
    self.assertEqual(3, len(wrong))

    expect = [1,2,3,4]
    start = 1
    stop = 4 + 1 # stop 값은 원하는 값 + 1
    actual = [n for n in range(start, stop)]

    self.assertEqual(4, len(actual))
    self.assertEqual(actual, expect)


    def test_list_comprehension(self):
    # 1~10 중 홀수 에 2 를 곱한다
    expect = [2, 6, 10, 14, 18]
    actual = [n * 2 for n in range(1,10 + 1) if n % 2 == 1]

    self.assertEqual(actual, expect)


    if __name__ == "__main__":
    unittest.main()