A Simple Module

Modules are used in most programming languages, in one form or another, to isolate parts of the code and hide the details to the outside world.

In this exercise you will write a module file named simple_module.py that provides the following functions:

set takes an integer value and stores it in a variable that’s private to the module
get returns the last value set, or -1 if not value was set yet
count returns the number of times the set function was called
clear resets the module to its initial state

Hints

You will need to use the global keyword in your module to refer to the variables that store the current value and count.

Discuss the benefits of encapsulation and how clean module interfaces foster the durability and ease of maintenance of your code.

To validate your code, download the test code below and run it as explained on the Hello, Python exercise page.