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For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
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Constants in Python
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

Books covering this topic
Yes. We have over 700 books in our library. Books covering Python are listed here and when you've selected a relevant book we'll link you on to Amazon to order.

Other Examples
This example comes from our "Applying OO design techniques and best practise" training module. You'll find a description of the topic and some other closely related examples on the "Applying OO design techniques and best practise" module index page.

Full description of the source code
You can learn more about this example on the training courses listed on this page, on which you'll be given a full set of training notes.

Many other training modules are available for download (for limited use) from our download centre under an Open Training Notes License.

Other resources
• Our Solutions centre provides a number of longer technical articles.
• Our Opentalk forum archive provides a question and answer centre.
The Horse's mouth provides a daily tip or thought.
• Further resources are available via the resources centre.
• All of these resources can be searched through through our search engine
• And there's a global index here.

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This web site is written and maintained by Well House Consultants.

Purpose of this website
This is a sample program, class demonstration or answer from a training course. It's main purpose is to provide an after-course service to customers who have attended our public private or on site courses, but the examples are made generally available under conditions described below.

Conditions of use
Past attendees on our training courses are welcome to use individual examples in the course of their programming, but must check the examples they use to ensure that they are suitable for their job. Remember that some of our examples show you how not to do things - check in your notes. Well House Consultants take no responsibility for the suitability of these example programs to customer's needs.

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