So, how do you figure out how many people on the guest list will actually attend the wedding? I get asked this question all the time. I wish I had a 100%- guaranteed-tried-and-true solution to offer or at least a magic crystal ball to whip out of my emergency kit to answer with, but alas, I can only offer my best advice.
Python Programming/Modules - Importing a Module. 1  To use the functions and classes offered by a module, you have to import the module... 2  The above imports the math standard module, making all of the functions in that module namespaced by the module name. It imports all functions and all classes, if any. You can import the module under a different name:
Using PI in python 2.7. Python 2.7.5 (default, May 15 2013, 22:44:16) [MSC v.1500 64 bit (AMD64)] on win32 Type help, copyright, credits or license for more information. >>> import math >>> math.pi 3.141592653589793 Check out the Python tutorial on modules and how to use them. As for the second part of your question, Python comes with batteries included, of course: