e.py

def calculate_stats(exam_results: List[int]) -> Dict[str, float]:
    max_score = max(exam_results)
    min_score = min(exam_results)
    avg_score = sum(exam_results) / len(exam_results)
    
    return {"max": max_score, "min": min_score, "avg": avg_score}
    
def post_exam_computation(exam_id):
    exam_results = db.get(exam_id)
    exam_stats = calculate_stats(exam_results)
    db.save(exam_stats)
    
def test_calculate_stats():
	exam_results = [1, 2, 3]
    stats = calculate_stats(exam_results)
    
    assert stats["max"] == 3
    assert stats["min"] == 1
    assert stats["avg"] == 2