Can someone please explain why I would want to only import part of a module instead of all of it?

Answer 1

it makes the program run faster since it doesn't have to load all the other functions, and it saves memory since it loads just the ones you need

Answer 2

Yea.. It's what sean said...
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For example.. You need to use only square root fuction from math module... This method will save you some memory and runtime...