Python Dictionary Comprehension with Examples

In this tutorial, we will cover how dictionary comprehension works in Python. It includes various examples which would help you to learn the concept of dictionary comprehension and how it is used in real-world scenarios.

What is Dictionary?

Dictionary is a data structure in python which is used to store data such that values are connected to their related key. Roughly it works very similar to SQL tables or data stored in statistical softwares. It has two main components -

1. Keys : Think about columns in tables. It must be unique (like column names cannot be duplicate)
2. Values : It is similar to rows in tables. It can be duplicate.

It is defined in curly braces { }. Each key is followed by a colon (:) and then values.

Syntax of Dictionary

d = {'a': [1,2], 'b': [3,4], 'c': [5,6]}

To extract keys, values and structure of dictionary, you can submit the following commands.

d.keys() # 'a', 'b', 'c'
d.values() # [1, 2], [3, 4], [5,

(continued...)

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