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easyDSA

What is the walrus operator?

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01

Understand the problem

Explain :=.

walrus
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03

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The walrus operator := assigns within an expression: while (line := f.readline()): or if (n := len(a)) > 10:. It avoids recomputing or pre-declaring a value, making some loops and comprehensions more concise.

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PYCompute once in a comprehension; assign-and-test loop
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