Namespaces with Module Imports

Question

I am learning Python and am still a beginner, although I have been studying it for about a year now. I am trying to write a module of functions which is called within a main

Answer 1

"Explicit is better than implicit" is a design decision that was made by the creators of Python (launch python and run import this).

Therefore, when you run module1.cool(), Python will not look for the undefined pi in the main module.

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You'll have to import the math module in explicitly whenever you want to use it - that's just how Python works.

Also, you should avoid from X import *-style imports, that's bad practice too. Here, you could do: from math import pi.