Coaches often send weekly summaries to athletes. Automate the creation of personalized, motivational messages.


import unittest
import user_code
import ast
import re   
import importlib
import csv
import unittest
import importlib

class TestTask(unittest.TestCase):
    def test_returns_list_of_summaries(self):
        import user_code
        importlib.reload(user_code)
        athletes = [
            {"name": "Sam", "attended_sessions": 4, "total_sessions": 5, "performance_score": 92},
            {"name": "Alex", "attended_sessions": 3, "total_sessions": 5, "performance_score": 78},
            {"name": "Jordan", "attended_sessions": 2, "total_sessions": 5, "performance_score": 55},
        ]
        result = user_code.generate_weekly_summaries(athletes)
        _dynamic_test(
            self,
            isinstance(result, list) and len(result) == len(athletes),
            "Returns a list of summary strings, one for each athlete.",
            f"Expected {len(athletes)} summaries, got {result}",
        )

    def test_summary_includes_name_and_sessions(self):
        import user_code
        importlib.reload(user_code)
        athletes = [
            {"name": "Sam", "attended_sessions": 4, "total_sessions": 5, "performance_score": 92},
        ]
        result = user_code.generate_weekly_summaries(athletes)
        summary = result[0] if result else ""
        _dynamic_test(
            self,
            "Sam" in summary and "4 out of 5" in summary,
            "Summary includes athlete name and sessions attended/total.",
            f"Summary missing name or session info: {summary}",
        )

    def test_attendance_rate_rounded(self):
        import user_code
        importlib.reload(user_code)
        athletes = [
            {"name": "Taylor", "attended_sessions": 3, "total_sessions": 8, "performance_score": 70},
        ]
        result = user_code.generate_weekly_summaries(athletes)
        summary = result[0] if result else ""
        # 3/8 = 0.375 -> 37.5%
        _dynamic_test(
            self,
            "37.5%" in summary,
            "Attendance rate rounded to one decimal place.",
            f"Attendance rate not rounded or missing: {summary}",
        )

    def test_performance_message_outstanding(self):
        import user_code
        importlib.reload(user_code)
        athletes = [
            {"name": "Jamie", "attended_sessions": 5, "total_sessions": 5, "performance_score": 95},
        ]
        result = user_code.generate_weekly_summaries(athletes)
        summary = result[0] if result else ""
        expected = "Outstanding performance! Keep setting the bar high."
        _dynamic_test(
            self,
            expected in summary,
            f"Correct message for performance >= 90: {expected}",
            f"Expected message not found: {summary}",
        )

    def test_performance_message_great(self):
        import user_code
        importlib.reload(user_code)
        athletes = [
            {"name": "Morgan", "attended_sessions": 4, "total_sessions": 5, "performance_score": 80},
        ]
        result = user_code.generate_weekly_summaries(athletes)
        summary = result[0] if result else ""
        expected = "Great week! Stay focused and keep pushing."
        _dynamic_test(
            self,
            expected in summary,
            f"Correct message for 75 <= performance < 90: {expected}",
            f"Expected message not found: {summary}",
        )

    def test_performance_message_good_effort(self):
        import user_code
        importlib.reload(user_code)
        athletes = [
            {"name": "Taylor", "attended_sessions": 3, "total_sessions": 8, "performance_score": 70},
        ]
        result = user_code.generate_weekly_summaries(athletes)
        summary = result[0] if result else ""
        expected = "Good effort. A bit more consistency will pay off."
        _dynamic_test(
            self,
            expected in summary,
            f"Correct message for 60 <= performance < 75: {expected}",
            f"Expected message not found: {summary}",
        )

    def test_performance_message_improve(self):
        import user_code
        importlib.reload(user_code)
        athletes = [
            {"name": "Jordan", "attended_sessions": 2, "total_sessions": 5, "performance_score": 55},
        ]
        result = user_code.generate_weekly_summaries(athletes)
        summary = result[0] if result else ""
        expected = "Let's work together to boost your performance next week!"
        _dynamic_test(
            self,
            expected in summary,
            f"Correct message for performance < 60: {expected}",
            f"Expected message not found: {summary}",
        )

    def test_zero_total_sessions(self):
        import user_code
        importlib.reload(user_code)
        athletes = [
            {"name": "Chris", "attended_sessions": 0, "total_sessions": 0, "performance_score": 80},
        ]
        result = user_code.generate_weekly_summaries(athletes)
        summary = result[0] if result else ""
        _dynamic_test(
            self,
            "0 out of 0" in summary and "(0.0%)" in summary,
            "Handles total_sessions == 0 by setting attendance rate to 0.",
            f"Attendance rate not handled correctly for zero sessions: {summary}",
        )

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 normalize_text(text):
    text = text.lower()
    text = re.sub(r"\\s{2,}", " ", text)
    text = re.sub(r"\\s*([,:?])\\s*", r"\\1 ", text)
    return text.strip()

def change_var(code: str, var_name: str, value: str) -> str:
    tree = ast.parse(code)
    lines = code.splitlines()
    changed = False
    # Collect all assignment nodes to modify
    assign_nodes = [
        (i, node)
        for i, node in enumerate(tree.body)
        if isinstance(node, ast.Assign)
        and any(isinstance(target, ast.Name) and target.id == var_name for target in node.targets)
    ]

    # If nothing to change, return unmodified code
    if not assign_nodes:
        return code

    # Perform replacements for all matching assignments (from last to first to not break line offsets)
    for i, node in reversed(assign_nodes):
        start_line = node.lineno - 1
        line = lines[start_line]
        indent = ' ' * (len(line) - len(line.lstrip()))
        lines[start_line] = f"{indent}{var_name} = {value}"
        next_line = len(lines)
        for next_node in tree.body[i+1:]:
            if hasattr(next_node, 'lineno'):
                next_line = next_node.lineno - 1
                break
        if next_line > start_line + 1:
            lines[start_line+1:next_line] = []
        changed = True

    return '\\n'.join(lines) if changed else code

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


test_main.py

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Challenge: Weekly Email Summary

Solution