Constants in Python - Python example

Applying OO design techniques and best practise example from a Well House Consultants training course
More on Applying OO design techniques and best practise [link]

This example is described in the following article(s):
• How do I set up a constant in Python? - [link]

This example references the following resources:
http://www.wellho.net/mouth/2485_.html)

Source code: constant.py Module: Y116

"""In reallity, you don't use constants in Python - you use variables
named to strongly discourage you from changing them. Here is a sample
file that sets up some 'constants'. Follow the link at the top of this
page (to http://www.wellho.net/mouth/2485_.html) to see how the file is
used and to read more about Python Constants or the lack thereof!)"""

import time
class whc:

"""A file of values to be used as globals or constants
        throughout our company's Python programs. By using this
        file, you are able to change the VAT rate (which is 15%
        as I write this in late 2009, but goes up to 15.0% on
        the 1st January 2010 in ONE PLACE only"""

        VAT = 15
        PHONE = "01225 708225"
        FREEPHONE = "0800 043 8225"
        COMPANY = "Well House Consultants Ltd"
        COPYRIGHT = "Copyright " + COMPANY + time.strftime(", %Y")

if __name__ == "__main__":
        for item in dir(whc):
                print item,":",
                exec ("print whc."+item)

Learn about this subject

This module and example are covered on the following public courses:
* Learning to program in Python
* Python Programming
* Intermediate Python
Also available on on site courses for larger groups

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