LOOPING 

 Loops allow you to save programming time and effort by using the same block of code over and over. If you didn't have loops, each repeated sequence would require repeating the same code. There are two types of loops in Python, for-loops and while-loops. A for-loop iterates through all the items in a sequence by executing a block of code for each item. It can be used on lists, tuples, or strings. A while-loop executes a block of statements as long as a condition is true.