查找替换当前值后的平均值

def replace_and_calculate_average(sequence, old_value, new_value):
    # 遍历序列，替换指定的值
    for i in range(len(sequence)):
        if sequence[i] == old_value:
            sequence[i] = new_value
    
    # 计算替换后的序列的平均值
    average = sum(sequence) / len(sequence)
    
    return average

# 示例用法
sequence = [1, 2, 3, 4, 5]
old_value = 3
new_value = 10

average = replace_and_calculate_average(sequence, old_value, new_value)
print("替换后的平均值：", average)