[Tutor] Beginner Q: What does the double underscore mean __ ?

Aaron Pilgrim aaronpil at gmail.com
Sun Sep 9 13:27:54 CEST 2012

I was trying to teach myself some python from a book and I have seen
double underscores used.
What does the __ mean and how do I know when to use it?

for example:


Pilgrim, Mark (2009-10-23). Dive Into Python 3 (Books for
Professionals by Professionals) (Kindle Locations 480-481). Apress.
Kindle Edition.

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