Python 3.9 New Features & How to Use Them

Python 3.9 New Features & How to Use Them

Python 3.9 is finally here. Python 3.9 New Features are moreover based on Strings, Dictionary, and Type Hinting. In this article, we will see these features with their demo.

Python 3.9 New Feature Guide

Python 3.9 is finally here, and it has some excellent features that can make the life of python programmers easier. These features are moreover based on Strings, Dictionary, and Type Hinting. Type Hinting might be a much newer concept in python. But, it can help a lot in many cases. Also, it can save a lot much time for python programmers. In this article, we will see these features with their demo.

Dictionary Unions

Dictionary plays a crucial role in python. We can use a dictionary for different purposes. A dictionary can help build entire datasets in the data science field using a combination of lists and loops. Python 3.9 introduces two new features in the dictionary.

Merge Operator |:

Now we can directly merge two dictionaries using the “|” merge operator. We will now try to play with the new merge operator. We have three dictionaries d0, d1, and d2. Lets, see how we can use the “|” operator here.

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Further, we can assign a newly formed dictionary to a variable using the “=” sign; then, we can use it for further usage.

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It is not limited to two dictionaries, but we can use N number of dictionaries to combine.

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Further, we can merge all the dictionary using “|” and a loop. Here, in the below code, “|=” is also known as an update operator that performs the merge in-place.

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