Changes

There are three types of comments in programming and your assignment should contain each:* The top-level docstring should contain information about what your script does. This is included in the duim.py file. <b>Please use pythoncomplete the top-level docstring.</b>* Use Python's docstring function docstrings to document your python script (script level documentation) and how each of the functions (function level documentation) you created for this assignmentwork. The docstring should describe 'what' the each function does, not 'how' it does.* Your script should also include in-line comments to explain anything that isn't immediately obvious to a beginner programmer. For these comments, it's always better to explain <i>why</i> your code is doing what it does rather than <i>what</i> it's doing. Also: <b><u>It is expected that you will be able to explain how each part of your code works in detail.</u></b>* Refer to the docstring for after() to get an idea of the function docstrings required.