Some alphabetizing.
Fixes typos.
Some alphabetizing.
Merge pull request #582 from jwworth/master

Some alphabetizing and typos
Added "A Guide to Python's Magic Methods"

I don't know whether this strictly meets your criteria of a "book". I'll let you decide.
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Merge pull request #583 from sugarjig/patch-1

Added "A Guide to Python's Magic Methods"