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Lesson 20.8 The None Value

We have seen the None value used in several previous videos. But in this video we finally introduce it formally. In particular, we show why it is so commonly used in object initialization.

From  Hannah Lee 56 plays

Lesson 5.2 Procedures

In this video, we show you how to define a procedure in the Python interactive shell. Recall that a procedure is a function that is used as a command.

From  Hannah Lee 85 plays

Lesson 0.1 The Command Line

This first video introduces you to the command line, which is a text-based tool for interacting with files and programs.

From  Walker White 400 plays