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A while loop repeatedly executes a block of code as long as a given condition remains true. It’s ideal when the number of iterations is unknown and depends on dynamic conditions. Below are practical examples of tasks you can perform with while loops in Python.
1. Counting and Printing Numbers
Steps:
Initialize a counter variable.
Use a while loop to run until the counter reaches a limit.
Increment the counter each iteration.
count = 1while count <= 5:print(count)count += 1Copied!✕CopyThis prints numbers from 1 to 5.
2. Summing Elements in a List
Steps:
Initialize an index and sum variable.
Loop until the index reaches the list length.
Add each element to the sum.
numbers = [10, 20, 30, 40]i = 0total = 0while i < len(numbers):total += numbers[i]i += 1print("Sum:", total)Copied!✕CopyThis calculates the total sum of list elements.
3. User Input Until Condition Met
Steps:
Prompt the user for input.
Continue looping until a specific keyword is entered.
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Learn how to use while loops in Python to repeat a task until a condition is satisfied. See 18 examples of while loops for various needs, such as finding sum, average, factorial, and more.
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