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A while loop in Python repeatedly executes a block of code as long as a given condition evaluates to True. It’s ideal when the number of iterations is unknown beforehand and depends on dynamic conditions.
Example:
count = 1while count <= 5:print(f"Iteration {count}")count += 1Copied!âś•CopyHere, the loop runs until count exceeds 5. The condition count <= 5 is checked before each iteration.
Basic Syntax
while condition:# code blockCopied!âś•Copycondition: An expression evaluated before each iteration.
If condition is True, the loop body executes; otherwise, it stops.
Using Multiple Conditions You can combine conditions with logical operators:
x = 0y = 5while x < 3 and y > 0:print(f"x={x}, y={y}")x += 1y -= 1Copied!âś•CopyThis loop continues only while both conditions are true.
Breaking and Skipping Iterations
break: Exit the loop immediately.
continue: Skip to the next iteration.
n = 0while n < 6:n += 1if n == 3:continue # skip printing 3if n == 5:break # stop loop entirelyprint(n)Copied!âś•Copy Python While Loops - W3Schools
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