Python:如果我有一个元组(A，B)，我如何在基于A值的范围内取所有B值的平均值？

def calculate_average(tuples, min_A, max_A):
    total = 0
    count = 0

    for tuple in tuples:
        A, B = tuple
        if min_A <= A <= max_A:
            total += B
            count += 1

    if count > 0:
        average = total / count
        return average
    else:
        return 0

tuples = [(1, 10), (2, 20), (3, 30), (4, 40), (5, 50)]
min_A = 2
max_A = 4
result = calculate_average(tuples, min_A, max_A)
print("平均值：", result)

平均值： 30.0