食料品店のシステムは、異なる棚にある商品の在庫を**タプル**で管理するよう設計されています。タプルを使用することで、一度設定したデータが**不変**であることが保証されます。

しかし、店舗では特定の商品を**監視**し、補充や配置換えを支援するために数量や位置を追跡する必要があります。

タプルを用いて在庫データを分析・管理し、特定の基準に基づいて指標を算出したり対応を行うことが求められています。

import unittest
import importlib
import io
import re
from contextlib import redirect_stdout
import inspect
import user_code


def _dynamic_test(test_case, condition, success_message, failure_message):
    if condition:
        test_case._testMethodName = success_message
        test_case.assertTrue(True, success_message)
    else:
        test_case._testMethodName = failure_message
        test_case.fail(failure_message)


def strip_comments_from_source(module):
    try:
        source = inspect.getsource(module)
        lines = source.split('\\n')
        cleaned = []
        for line in lines:
            stripped = line.strip()
            if stripped.startswith('#'):
                continue
            if '#' in line:
                line = line.split('#')[0]
            if line.strip():
                cleaned.append(line)
        return '\\n'.join(cleaned)
    except Exception:
        return ""


class TestFruitShelfTuple(unittest.TestCase):

    def normalize_text(self, text):
        text = text.lower()
        text = re.sub(r'\s+', ' ', text)
        text = re.sub(r'\s*([,:?\[\]\(\)])\s*', r'\1', text)
        return text.strip()

    def test_apple_count(self):
        importlib.reload(user_code)
        _dynamic_test(
            self,
            hasattr(user_code, 'apple_count') and user_code.apple_count == 3,
            "apple_count is correct (3)",
            f"Expected apple_count to be 3, got {getattr(user_code, 'apple_count', None)}"
        )

    def test_banana_index(self):
        importlib.reload(user_code)
        _dynamic_test(
            self,
            hasattr(user_code, 'banana_index') and user_code.banana_index == 2,
            "banana_index is correct (2)",
            f"Expected banana_index to be 2, got {getattr(user_code, 'banana_index', None)}"
        )

    def test_grape_count_logic(self):
        importlib.reload(user_code)
        grape_count = user_code.shelf.count("grapes")
        _dynamic_test(
            self,
            grape_count == 1,
            "grape_count is correct and equals 1",
            f"Expected grape count to be 1, got {grape_count}"
        )

    def test_oranges_in_shelf(self):
        importlib.reload(user_code)
        _dynamic_test(
            self,
            "oranges" in user_code.shelf,
            "'oranges' is present in shelf",
            "'oranges' expected in shelf, but not found"
        )

    def test_print_output(self):
        f = io.StringIO()
        with redirect_stdout(f):
            importlib.reload(user_code)
        output = self.normalize_text(f.getvalue())

        expected_fragments = [
            self.normalize_text("Number of Apples: 3"),
            self.normalize_text("First Banana Index: 2"),
            self.normalize_text("Apples need to be restocked."),
            self.normalize_text("Grapes need to be restocked."),
            self.normalize_text("Oranges are at index: 1"),
        ]

        for expected in expected_fragments:
            _dynamic_test(
                self,
                expected in output,
                f"Output includes: {expected}",
                f"Expected output to include '{expected}', but got: '{output}'"
            )

    def test_in_operator_used(self):
        source = strip_comments_from_source(user_code)
        found = re.search(r'\s+in\s+', source)
        _dynamic_test(
            self,
            found is not None,
            "'in' operator is used to check for 'oranges'",
            "Expected use of 'in' to check for 'oranges'"
        )


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

test_main.py

`in` および `not in` 演算子は、**タプル**と**リスト**の両方で使用可能。

注意

データ分析のためのPythonの基礎をしっかりと身につけます。変数、データ型、文字列、条件文、ループ、主要なデータ構造、関数について、分析作業に関連する例を用いて学習します。

チャレンジ：タプル操作

出力要件

解答