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How to Simplify Loops with Python's Walrus

#python #todayilearned #programming #beginners

TIL: Python's walrus operator := can simplify while loops
I just discovered Python's walrus operator (:=), and it's a game-changer for simplifying while loops. The := operator is an assignment expression that allows you to assign a value to a variable as part of a larger expression. This is particularly useful in while loops where you need to assign the result of a function call to a variable and then check it as the loop condition.

Before:

while True:
    line = file.readline()
    if not line:
        break
    print(line.strip())
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After:

while (line := file.readline()):
    print(line.strip())
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In the "after" example,

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