在google colab中测试average时，“‘float”对象不可订阅

my_list = [1, 2, 3]
print(my_list[0])  # 输出 1

def calculate_average(numbers):
    total = sum(numbers)
    average = total / len(numbers)
    return average

# 错误的示例
data = 3.5  # 这里应该是一个列表或元组，而不是一个浮点数
print(calculate_average(data))  # 这里会报错

def calculate_average(numbers):
    total = sum(numbers)
    average = total / len(numbers)
    return average

# 正确的示例
data = [3.5, 4.5, 5.5]  # 这里应该是一个列表或元组
print(calculate_average(data))  # 输出 4.5