The while loop in Python is used to iterate over a block of code as long as the test expression (condition) is true. While True → Loop will run forever unless we stop it because the condition of while is always True.. We can stop it using break statement. This may be when the loop reaches a certain number, etc. >>> while True: print(0) 0 0 0 0 0 0 0 0 0 0 0 0 0 Traceback (most recent call last): File "", line 2, in print(0) KeyboardInterrupt The loop runs until CTRL + C is pressed, but Python also has a break statement that we can use directly in our code to stop this type of loop. I won’t consider “[code ]while True:[/code]” always as a bad coding style with Python. while True: n = raw_input("Please enter 'hello':") if n.strip() == 'hello': break Python docs about while loop The syntax of a while loop in Python programming language is −. To make the condition True forever, there are many ways. But unlike while loop which depends on condition true or false. This continues till x becomes 4, and the while condition becomes false. How to Exit a While Loop with a Break Statement in Python. Python Infinite While Loop. In this tutorial, we will learn some of the ways to create an infinite while loop, with the help of example Python programs. Here is the full Python code to perform the while loop for our example: countdown = 10 while countdown > 3: print ('CountDown = ', countdown) countdown = countdown - 1 Once you run the code, you’ll get the following countdown: Here is a quick guide on how to create an infinite loop in python using a ‘while true’ statement. To make a Python While Loop run indefinitely, the while condition has to be True forever. C provides while loops and do while loops. The else clause will be executed when the loop terminates normally (the condition becomes false). Syntax while if. In this article, we show how to exit a while loop with a break statement in Python. We generally use this loop when we don't know the number of times to iterate beforehand. x = 6 while x: print (x) x … while expression: statement(s) Here, statement(s) may be a single statement or a block of statements. The condition may be any expression, and true is any non-zero value. And so long as this condition is true, the countdown will decrease by intervals of 1. Python only provides while loops. In a while loop, the test condition is checked first and if it is true then the block of statements inside the loop is executed. Question or problem about Python programming: def play_game(word_list): hand = deal_hand(HAND_SIZE) # random init while True: cmd = raw_input('Enter n to deal a new hand, r to replay the last hand, or e to end game: ') if cmd == 'n': hand = deal_hand(HAND_SIZE) play_hand(hand.copy(), word_list) print elif cmd == 'r': play_hand(hand.copy(), word_list) print elif […] Syntax of while Loop in Python while test_expression: Body of while. How to use "For Loop" In Python, "for loops" are called iterators. So a while loop should be created so that a condition is reached that allows the while loop to terminate. The condition is true, and again the while loop is executed. while True: # statement (s) If not condition: break; In python, while loop repeatedly executes the statements in the loop if the condition is true. Python allows an optional else clause at the end of a while loop. Just like while loop, "For Loop" is also used to repeat the program. In the while … Having True as a condition ensures that the code runs until it's broken by n.strip() equaling 'hello'. There are number of reason that you might want to implement this; a great use case would be outputting a fluctuating variable to the terminal such as a temperature reading from a sensor. A while loop statement in Python programming language repeatedly executes a target statement as long as a given condition is true.. Syntax. 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