Walrus Operator in Python 3.8

One of the biggest highlights of Python 3.8.0 is a new feature for assignment expressions known as the Walrus Operator.

"There is new syntax := that assigns values to variables as part of a larger expression," the Python 3.8.0 release notes state.


"It is affectionately known as 'the walrus operator' due to its resemblance to the eyes and tusks of a walrus."



In this example, the assignment expression helps avoid calling len() twice:

if (n := len(a)) > 10:
    print(f"List is too long ({n} elements, expected <= 10)")

2 comments:

Python said...

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