Python for Everybody (py4e.com)
These are the lectures to supplement the textbook 'Python for Everybody: Exploring Information' and its associated web site py4e.com
Python for Everybody (py4e.com)
5.4 Loop Techniques
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Dr. Charles Russell Severance
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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.