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This article mainly introduces "what are the general operations of Python built-in sequences". In the daily operation, I believe that many people have doubts about the general operation of Python built-in sequences. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "what are the general operations of Python built-in sequences?" Next, please follow the editor to study!

A collection of data elements organized in some way, such as numbering elements, which can be numbers or characters, or even other data structures. In Python, the most basic data structure is sequence. Each element in the sequence is assigned a sequence number-that is, the location of the element, also known as the index. The first element index is 0, the second is 1, and so on.

Python contains the built-in sequences in 6, namely lists, tuples, strings, Unicode strings, buffer objects, and xrange objects.

General sequence operations: index, slicing, sequence addition, multiplication, membership, length, minimum and maximum

1. Indexes

All the elements in the sequence are numbered-incremented from 0. The elements of the sequence can be accessed separately by numbering. The sequence of Python can also be indexed on the right, and the index of the rightmost element is-1, decreasing if you want to start on the left.

two。 Slice

The index is used to access a single element, the elements in a certain range can be accessed by fragments, and the fragments are implemented by two indexes separated by colons. The implementation of the sharding operation needs to provide two indexes as boundaries, the elements of the first index are contained in the shard, and the second is not included in the shard.

For a positive step, Python extracts the element right from the head of the sequence to the last element, while for the negative step, it extracts the element from the tail of the sequence to the left until the first element

3. Sequence addition

In the last example, an attempt was made to add a list and a string, but something went wrong. Although they are all sequences, they are of different data types and cannot be added.

4. Multiplication

Leaving a sequence with the number x will generate a new sequence, and in the new sequence, the original sequence will be repeated x times.

5. Membership

You can use the in operator to check whether a value is in the sequence, return Ture if it is, and False if it is not.

6. Length, minimum and maximum

The built-in functions len, min, and max return the number of elements contained in the sequence, the smallest element in the sequence, and the largest element in the sequence, respectively.

At this point, the study of "what are the common operations of Python built-in sequences" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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