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This article mainly explains "what is the list in python". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what is the list in python".

A brief introduction to the data structure of 0pr Python

Python built-in data structures include lists, tuples, strings, dictionaries, collections, etc. In addition, dataframe and series are commonly used in pandas.

1. Ordered data structure:

List (list), which is an ordered data structure, has no fixed size, and can be modified by offsets and other methods. The basic form of the list is as follows: [1, 1, 2, 3, 4]

Tuple (tuple), which is an ordered data structure, is immutable and can be combined and copied to generate a new tuple. The basic forms of tuples are as follows: (1) (1) 3, 6, 10)

Str (string), which is also an ordered data structure, is the basic form of a string such as: 'hello'.

2. Unordered data structure:

Set (set) is a set of unordered and non-repeating elements.

Basic functions include relational operations and elimination of duplicate elements. The basic forms of collections are:

{'apple','orange','banana'}

A dict (dictionary) is a collection of unordered keys: value pairs (key:value pairs).

Keys must be different from each other (within the same dictionary).

The basic forms of the dictionary are as follows: {'jack': 4098,' sape': 4139}

List is the most basic and important data structure in Python.

One, create a list

Second, list index

Third, modify the list

Fourth, use the list

Fifth, thinking practice

7, use the list generation formula to find the sum of two vectors, dot product.

(reply keyword python07 for reference answer)

8, find the sum of all integers in the range 1 to 1000 that are divisible by 3 or 5.

(hint: unique (a) removes duplicate element values from list a)

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