Having True as a condition ensures that the code runs until it's broken by n.strip() equaling 'hello'. Python allows an optional else clause at the end of a while loop. The while loop in python first checks for condition and then the block is executed if the condition is true. Its construct consists of a block of code and a condition. Welcome! In this tutorial, we will learn some of the ways to create an infinite while loop, with the help of example Python programs. How to use "For Loop" In Python, "for loops" are called iterators. Estefania Cassingena Navone. While Loop. Thus in python, we can use while loop with if/break/continue statements which are indented but if we use do-while then it does not fit the rule of indentation. a = 0 while a < 10: a = a + 1 print a This repeats until the condition becomes false. How to Exit a While Loop with a Break Statement in Python. 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. x = 6 while x: print (x) x … Syntax of while Loop in Python while test_expression: Body of while. The while loop in Python is used to iterate over a block of code as long as the test expression (condition) is true. We generally use this loop when we don't know the number of times to iterate beforehand. while True: n = raw_input("Please enter 'hello':") if n.strip() == 'hello': break Python docs about while loop While loop runs a block of code when the given condition is True. In this article, we show how to exit a while loop with a break statement in Python. If while loop expression always evaluates to true. This may be when the loop reaches a certain number, etc. Python while loop is a conditional statement that runs as long as an expression evaluates to true.. While loops are very powerful programming structures that you can use in your programs to repeat a sequence of statements. 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. If you want to learn how to work with while loops in Python, then this article is for you. The while loop tells the computer to do something as long as the condition is met. Python While Loop Tutorial – While True Syntax Examples and Infinite Loops. Here is a quick guide on how to create an infinite loop in python using a ‘while true’ statement. To make the condition True forever, there are many ways. The else clause will be executed when the loop terminates normally (the condition becomes false). The condition is true, and again the while loop is executed. So a while loop should be created so that a condition is reached that allows the while loop to terminate. The Python While Loop is used to repeat a block of statements for given number of times, until the given condition is False. The block is executed repeatedly until the condition is evaluated to false. This continues till x becomes 4, and the while condition becomes false. But unlike while loop which depends on condition true or false. A While loop in Python start with the condition, if the condition is True then statements inside the while loop will be executed. Therefore, the while loop … Python Infinite While Loop. Just like while loop, "For Loop" is also used to repeat the program. The condition is evaluated, and if the condition is true, the code within the block is executed. To make a Python While Loop run indefinitely, the while condition has to be True forever.