Python's Walrus Operator (:=) Assigns and Evaluates in One Step

Python's walrus operator (:=), introduced to allow assignment within expressions, lets developers assign a value and use it simultaneously in a single line. It is particularly useful in while loops and if conditions, reducing the need to repeat calculations or duplicate lines of code. For example, a while loop reading user input can be condensed from multiple lines into a single concise expression. While the operator can make code more compact and readable, experts caution against overusing it, as shorter code is not always clearer or better. The walrus operator is best applied selectively where it genuinely improves readability without sacrificing clarity.