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name = "SkillEnsure"
scores = [82, 91, 88, 96]

def grade_band(score):
    if score >= 90:
        return "advanced"
    if score >= 80:
        return "proficient"
    return "developing"

print(f"Python lab: {name}")
for index, score in enumerate(scores, start=1):
    print(f"assessment_{index}: {score} -> {grade_band(score)}")

print("average:", round(sum(scores) / len(scores), 2))