How do I define a global constant...

John Machin sjmachin at lexicon.net
Thu Sep 21 00:28:52 CEST 2006


SpreadTooThin wrote:
> How do I define a constant that I can use in my script...
> For example lets say I have a file called constants.py and in there I
> have PI = 3.14
>
> in my test script I do:
>
> from constants import *
>
> How do I access PI later on?

Like this:

inaccurate_estimate_of_area = PI * radius ** 2 # :-)

You may wish to have a look at the built-in math module:

from math import *
much_better_area = pi * radius ** 2

HTH,
John




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