How to use python to deal with some elements of a list

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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', 'chen_yu'] after reaching the element in front of the second index you specify. I believe you have a deeper understanding of "how to use python to deal with some elements of the list". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!