python中range()函数的返回值是多少?

2022-01-24 00:00:00 python python-3.x python-3.5 range

问题描述

我认为 range() 函数会返回一个列表,其中包含您放在括号内的参数.但是当我在 IDLE 中输入 range(4) 时,我得到 range(0, 4) 作为输出.同样,当我输入 print(range(4)) 时,我也会得到 range(0, 4) 作为输出.我目前正在使用 python 3.5.

我目前正在使用以下电子书学习 python:如何像计算机科学家一样思考",在该电子书中,它们提供了活动代码块,您可以在其中运行 python 代码.当我在那里运行 print(range(4)) 时,我确实得到了我期望的列表,即 [0, 1, 2, 3].p>

谁能给我解释一下?

提前致谢!

解决方案

您正在阅读的书可能使用 Python 2,其中 range 返回一个列表.

在 Python 3 中,range 改为返回 不可变序列类型.

I thought that the range() function returns a list with the arguments that you have put inside the parentheses. But when I type range(4) in IDLE, I get range(0, 4) as output. Similarly, when I type print(range(4)), I also get range(0, 4) as output. I am currently using python 3.5.

I am currently studying python with the following eBook: "How To Think Like a Computer Scientist" and in that eBook, they provide active code blocks where you can run python code. And when I run print(range(4)) in there, I do get the list that I expected, i.e. [0, 1, 2, 3].

Can someone explain this to me?

Thanks in advance!

解决方案

The book you are reading probably uses Python 2, where range returns a list.

In Python 3, range returns an immutable sequence type instead.

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