What is a python dictionary? How to create and use python dictionary?

In today's article, we will learn about the dictionary in python. In this article, I will explain What a python dictionary is. And explain how to use python dictionary. Okay, without further ado, let’s get into the article.

What is a python dictionary?

Dictionary is another mutable container model and can store any type of object.

Each key value of the dictionary key=>value pair is separated by a colon : , each key value pair is separated by a comma,, and the entire dictionary includes In curly braces {}, the format is as follows:

d = {key1 : value1, key2 : value2 }

The key is generally unique. If the last key-value pair is repeated, the previous one will be replaced, and the value does not need to be unique.

>>>dict = {'a': 1, 'b': 2, 'b': '3'};
>>> dict['b']
'3'
>>> dict
{'a': 1, 'b': '3'}

The value can be of any data type, but the key must be immutable, such as string, number or tuple.

How to use python dictionary?

A simple dictionary example:

dict = {'Alice': '2341', 'Beth': '9102', 'Cecil': '3258'}

You can also create a dictionary like this:

dict1 = { 'abc': 456 };
dict2 = { 'abc': 123, 98.6: 37 };

The above is all about this article, dictionary in python . I hope what I said and the examples I gave can be helpful to you.

For more related knowledge, please visit the Python tutorial column on the php Chinese website.

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