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PYWhile Loop in Python
A while loop in Python is used to repeat a block of code as long as a specified condition is true. It keeps running until the condition becomes false, making it useful when you don’t know in advance how many times the loop should run.
The basic syntax is:
while condition:
# code to execute
Here’s an example:
i = 0
while i < 5:
print(i)
i += 1
This will print numbers from 0 to 4.
There are different types of while loops like a simple while loop, an infinite loop using while True, and nested while loops where one loop runs inside another.
Common use cases include repeating tasks, validating user input, iterating when the number of steps isn’t fixed, and implementing algorithms like searching or sorting.
To avoid issues, always initialize your loop variables, keep conditions clear, and make sure the loop will eventually stop. You can also use a break statement to exit the loop early when needed.
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