How python handles some elements of a list

This article mainly introduces python how to deal with some elements of the list, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand.

1. Some elements of the processing list are called slices. Create a slice and specify the index of the first element and the last element to be used.

2. This allows Python to create a slice that starts with the first element and ends with the last element, that is, copying the entire list.

Example

Names = ['zhang_san','chen_cheng','li_hong','liu_li','chen_yu'] print (names [0:3]) print (names[ 0:-1]) print (names [:]) print (names [- 1]) print (names [- 3:]) negative index returns the element corresponding to the distance from the end of the list. To output the last three members of the list, use the slice names [- 3:] as the function range () Python stops ['zhang_san',' chen_cheng', 'li_hong'] [' zhang_san', 'chen_cheng',' li_hong', 'liu_li'] [' zhang_san', 'chen_cheng',' li_hong', 'liu_li',' chen_yu'] chen_yu ['li_hong',' liu_li'] after reaching the element in front of the second index you specify. [chen_yu'] Thank you for reading this article carefully. I hope the article "how to deal with some elements of the list" shared by the editor will be helpful to you. At the same time, I also hope that you will support and pay attention to the industry information channel. More related knowledge is waiting for you to learn!