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Thomas Bynum4,616 Points
What is the point of a magic method?
I feel dense watching these videos, but what is the point of a magic method? I thought python knew how to add and subtract and convert to integers without me telling it how to do that. What is
doing differently than a + b?
Chris FreemanTreehouse Moderator 68,404 Points
Good question! All of the built-in types have magic methods like
__iadd__ predefined so it appears that things like
a+b just work. The types
float, etc. all have these magic methods.
When creating user-defined classes, how to “add” two instances of a class is at best unknown. By defining the requisite magic methods, the new class can take advantage of the + operator to do interesting things.
Post back if you need more help. Good luck!!!