How to Parse Data with Generators and Comprehensions in Python

def parse_data_helper(raw_records):
    """Extract active users' names and scores from raw records."""
    parsed = (
        (record["name"], record["score"])
        for record in raw_records
        if record["active"] and record["score"] >= 0
    )
    return list(parsed)


def aggregate_scores(parsed_data):
    """Sum scores grouped by name using a comprehension."""
    names = {name for name, _ in parsed_data}
    return {
        name: sum(score for n, score in parsed_data if n == name)
        for name in names
    }


if __name__ == "__main__":
    raw_data = [
        {"name": "Ana", "score": 10, "active": True},
        {"name": "Bob", "score": 5, "active": False},
        {"name": "Ana", "score": 7, "active": True},
        {"name": "Cal", "score": -3, "active": True},
    ]

    filtered = parse_data_helper(raw_data)
    print("Parsed:", filtered)
    print("Aggregated:", aggregate_scores(filtered))