Looping with the for loop

- [Instructor] While scripting with large lists in Dynamo,…we often need to perform a single function…for every item in a list.…Say, for example, we have a list of numbers.…We may want to create a list of points…based on those numbers driving the x coordinate.…To do this in Python, we need to learn about…a programming concept known as looping.…Looping allows us to execute an instruction repeatedly…until a certain condition is met.…Say we have looped, or iterated,…through every item in a list.…

There are two types of looping in Python,…the for loop and the while loop.…Let's start by looking at the for loop.…Say, for example, we had a list of numbers…zero through to five.…A for loop will allow us to loop over every item in the list…and perform an instruction.…To do this we need a variable, say var, for example.…And for each loop through the list…the item is assigned to the variable.…So looping through our list of numbers,…in the first loop var would equal zero.…

In the second loop var would equal one, and so on.…This will continue until every number in the list…