The else: statement is an optional default statement that follows an if, or elif statement or while, or for loop. The code contained in the else: block will only execute when the initial if and elif, while or for conditions are False. It is optional because it is not always necessary to have code that executes by default when a conditional statement is False.

Python allows the use of else after any conditional statement which makes it a perfect place to perform 'clean-up' tasks after exiting a while: or for: loop. When preceded by a while or for loop the else: statement is simply executed after the loop is finished.

code block : any block of code indented any amount of space or tab stops

code block : Executes indented code block