Shulou(Shulou.com)06/03 Report--

Today, I will talk to you about the common operation of the list in Python, which may not be well understood by many people. In order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article.

Format of the list: variable An is of type namesList = ['xiaoWang','xiaoZhang','xiaoHua']

What is more powerful than arrays in C language is that the elements in the list can be of different types, such as: testList = [1,'a']

Print out the data of the list

1. Loop traversal of list 1. For loop traversal

2. While loop traversal

2. Add operation of list 1, append ()

Append allows you to add elements to the list (tail)

2. Extend ()

Extend allows you to add elements from another collection to the list one by one

3. Insert ()

Insert (index, object) inserts the element object before the specified location index

Third, the modification operation of the list

1. When you modify an element, use the subscript to determine which element you want to modify before you can modify it.

Fourth, the list of search 1, in

In (exist), if present, the result is true, otherwise it is false

2 、 not in

Not in (does not exist), if it does not exist, then the result is true, otherwise false

3 、 index

Find the index of the elements in the list

4 、 count

View the number of times elements appear in the list

5. Delete 1 in the list. Del

Del is deleted according to the subscript

2 、 pop

Pop deletes the last element by default, or it can be deleted according to the index.

3 、 remove

Remove is deleted based on the value of the element

6. Sorting operation of the list 1. Sorting sort ()

The sort method rearranges the list in a specific order, defaulting from small to large, and the parameter reverse=True can be changed to reverse order, from large to small.

2. The reverse method reverses the order of the content

After reading the above, do you have any further understanding of the common operations of lists in Python? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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