IDLE is the bundled editor for Python, it comes with all the distributions. Here I show you how to get started writing and running scripts and how to use the extra power of IDLE.
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Topics covered - printing at the immediate command line inside IDLE, navigating at the command line, writing loops at the command line, seeing tooltips which give us help about Python functions. Using a keyboard interrupt (Ctrl-C ) to break into code editing. Defining a function at the command line and then calling it with arguments. Command completion (using Alt-/). Use of default arguments in a function.
In the second half of the video I show you how to use IDLE's script editor - we copy the code we've developed at the command line into an editor, save the code, run it (F5) and edit it. At end end of this video you will have a thorough understanding of the main development environment that ships with every Python distribution.
You'll find the source code in the wiki. Come join me in the forum for questions and tasks.
For more introductions, see the IDLE Doc at Python.org and this second intro.