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Example 8: A while Loop with the else Clause. In Python, a while loop can be used with an else clause. When the condition in the while loop becomes false, the else block is executed. However, if there is a break statement inside the while loop block, the code exits the loop without executing the else block.
while Loop Syntax while condition: # body of while loop. Here, The while loop evaluates condition, which is a boolean expression.; If the condition is True, body of while loop is executed. The condition is evaluated again. This process continues until the condition is False.; Once the condition evaluates to False, the loop terminates.; Tip: We should update the variables used in condition ...
Example Get your own Python Server. Print i as long as i is less than 6: i = 1. while i < 6: print(i) i += 1. Try it Yourself ». Note: remember to increment i, or else the loop will continue forever. The while loop requires relevant variables to be ready, in this example we need to define an indexing variable, i, which we set to 1.
The while loop checks a condition and executes the task as long as that condition is satisfied. The loop will stop its execution once the condition becomes not satisfied. The syntax of a while loop is as follows: while condition: statements. In this post, I have added some simple examples of using while loops in Python for various needs.
The Python break and continue Statements. In each example you have seen so far, the entire body of the while loop is executed on each iteration. Python provides two keywords that terminate a loop iteration prematurely:. The Python break statement immediately terminates a loop entirely. Program execution proceeds to the first statement following the loop body.
The flowchart below shows the while loop in action. Python while loop flowchart. Note: The most important part of the while loop is the increment, decrement, or change of some variable within the block of code so that loop moves toward the finish line. Otherwise, the loop will never terminate. While Loop Example. Example 1: Print the numbers ...
A while loop always consists of a condition and a block of code. A while loop ends if and only if the condition is true, in contrast to a for loop that always has a finite countable number of steps. Related course: Complete Python Programming Course & Exercises. Example While loop example. The while loop below defines the condition (x < 10) and ...
The syntax for a while loop in Python is as follows: while condition: # loop body. The while loop will continue to execute as long as the condition is True. The condition is checked at the beginning of each iteration, so if the condition is False when the loop is first encountered, the loop body will never be executed.
Basic syntax of while loops in Python. Break a while loop: break. Continue to the next iteration: continue. Execute code after normal termination: else. Infinite loop with while statement: while True: Stop the infinite loop using keyboard interrupt (ctrl + c) Forced termination.
Syntax of while Loop in Python. The syntax of the while loop in Python is:. while test_condition: statement(s) Here, the statements inside the while loop are executed for as long as test_condition is True.. At first, test_condition is checked and if it is True then the body of the loop is entered. After one iteration, the test_condition is checked again. And this process continues until test ...