![Python for Everybody (Audio/PY4E) show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/075/062/small/python-for-everybody-audio-py4e.jpg)
Summary: We continue to look at how to construct loops including how to do something special the first time through the loop. We introduce the idea of 'None' which is a way to indicate that a variable is currently empty.
Summary: We continue to look at how to construct loops including how to do something special the first time through the loop. We introduce the idea of 'None' which is a way to indicate that a variable is currently empty.