関数を作って再利用する

def greet(name):
    print(f"こんにちは、{name} さん！")

greet("Alice")

def add(a, b):
    return a + b

result = add(10, 20)
print(result)

def create_user(name, is_admin=False):
    role = "admin" if is_admin else "user"
    return {"name": name, "role": role}

create_user("Alice", is_admin=True)

def area_of_triangle(base, height):
    """底辺と高さから三角形の面積を求める"""
    return base * height / 2

def read_scores():
    return [int(x) for x in input("点数をカンマ区切りで入力: ").split(",")]

def calc_avg(scores):
    return sum(scores) / len(scores)

def main():
    scores = read_scores()
    avg = calc_avg(scores)
    print(f"平均: {avg:.1f}")

if __name__ == "__main__":
    main()