[issue21573] Clean up turtle.py code formatting

[Lita Cho]

Lita Cho added the comment:

Thank you so much for your support, Terry. I really appreciate all your feedback. Your comments have been very helpful as I am learning Turtle and Tkinter.

Most of my changes are related to spacing, visual indentation, consistent line spaces between method definitions, and making sure all the code falls within 80 lines. They have been all been minor changes that wouldn't change the logic of the code. I haven't gotten to removing the commented out code yet.

I will wait to commit this till I fix a bug in Turtle.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21573>
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