This challenge will require you to use the `and`, `or`, and `not` **operators** as well as **boolean comparison operators** to manage a complex scenario for a grocery store. 


import unittest
import importlib
import io
from contextlib import redirect_stdout
import re
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 TestMakeDiscountLogic(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_overstockRisk_value(self):
        importlib.reload(user_code)
        _dynamic_test(
            self,
            hasattr(user_code, 'overstock_risk') and user_code.overstock_risk is True,
            "overstock_risk is correctly set to True",
            f"Expected overstock_risk to be True, got {getattr(user_code, 'overstock_risk', None)}"
        )

    def test_discountEligible_value(self):
        importlib.reload(user_code)
        _dynamic_test(
            self,
            hasattr(user_code, 'discount_eligible') and user_code.discount_eligible is True,
            "discount_eligible is correctly set to True",
            f"Expected discount_eligible to be True, got {getattr(user_code, 'discount_eligible', None)}"
        )

    def test_makeDiscount_value(self):
        importlib.reload(user_code)
        _dynamic_test(
            self,
            hasattr(user_code, 'make_discount') and user_code.make_discount is True,
            "make_discount is correctly set to True",
            f"Expected make_discount to be True, got {getattr(user_code, 'make_discount', None)}"
        )

    def test_print_output(self):
        f = io.StringIO()
        with redirect_stdout(f):
            importlib.reload(user_code)
        output = self.normalize_text(f.getvalue())
        expected = self.normalize_text("Should the item be discounted? True")
        _dynamic_test(
            self,
            expected in output,
            "Print output is correct",
            f"Expected output to include: '{expected}', got: '{output}'"
        )

    def test_or_operator_used(self):
        source = strip_comments_from_source(user_code)
        _dynamic_test(
            self,
            re.search(r'\s+or\s+', source) is not None,
            "'or' operator is used in the code",
            "Expected use of 'or' logical operator"
        )

    def test_and_operator_used(self):
        source = strip_comments_from_source(user_code)
        _dynamic_test(
            self,
            re.search(r'\s+and\s+', source) is not None,
            "'and' operator is used in the code",
            "Expected use of 'and' logical operator"
        )

    def test_not_operator_used(self):
        source = strip_comments_from_source(user_code)
        _dynamic_test(
            self,
            re.search(r'\s*not\s*', source) is not None,
            "'not' operator is used in the code",
            "Expected use of 'not' logical operator"
        )


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

test_main.py

A streamlined beginner course focusing on the core programming concepts in Python as a foundation for data science. This version removes recap chapters to maintain an action-oriented, hands-on learning experience with a focus on writing clean code, manipulating variables, controlling program flow, building reusable functions, and utilizing fundamental data structures, each reinforced by practical challenges.

Challenge: Boolean Logic

Output Requirements

解答