Advance Python Dictionary Techniques

In this Python Dictionary article we want to talk about Advance Python Dictionary Techniques, so Python dictionaries are one of the most useful data structures in Python. they allows you to store data in key value pairs, and this makes it easy to retrieve and manipulate data in a fast and efficient way. in this article we want to talk about some advance Python dictionary techniques that can help you take your programming skills to the next level.

 

 

  1. Default Dictionaries

One of the most common problems when working with Python dictionaries is when you try to access a key that does not exist in the dictionary. this results in KeyError being raised, which can be inconvenient and time consuming to handle. defaultdict class from the collections module provides a solution to this problem. when you create defaultdict, you specify default factory function that will be called to provide a default value for missing key. this is the example.

 

 

If you run this code the result will be zero.

Advance Python Dictionary Techniques
Advance Python Dictionary Techniques

 

 

  1. Merging Dictionaries

Python provides an easy way to merge dictionaries using the update method. this method updates the dictionary with key value pairs from another dictionary. this is an example.

 

 

This will be the result

Advance Python Dictionary Techniques
Advance Python Dictionary Techniques

 

 

  1. Dictionary Comprehension

Like list comprehension, dictionary comprehension is powerful technique for creating dictionaries in easy way. it allows you to create dictionaries in single line of code using simple syntax. this is an example:

 

 

This will be the result

Python Dictionary Techniques
Python Dictionary Techniques

 

 

  1. Sorting Dictionaries

By default dictionaries in Python are unordered. however, you can sort a dictionary by its keys or values using the sorted function. 

 

 

 

This will be the result

Advance Python Dictionary Techniques
Advance Dictionary Techniques

 

 

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