* Create a Python module with a __main__ , and at least 100 lines of code. You should use

if __name__ == "__main__":

* Define at least 1 class, and at least 1 function for each class you have defined. Your __main__ should instantiate objects of the classes you have designed, and use them to invoke the methods defined in those classes.

* Use list comprehensions to create lists.

* Use dictionary comprehensions to create dictionaries.

* Use at least 1 decision-making statement (if-elif)

* Use at least 1 looping statement (for or while).

* Use at least 1 try-except to catch some exceptions.

* Use the input() function, or command-line arguments, to get some user input

* Produce some, hopefully interesting, output

* Add enough comments to make your script easy to understand (not counted toward the 100 line requirement)