Initial commit and data analysis python lesson

[James-S-Santangelo]

• Brief intro to classes, attributes, and methods
• Intro to Pandas using the iris data
• Intro to visualisation using Seaborn and iris

Numpy is in there but there is no content. Feel free to fill it in as you see fit.

[aays]

Few edits to the notebook:

• The Coders pandas lesson is by Derek Howard - not sure why only Luke is showing in the commit history for that file
• Explanation of classes - this looks fine, but I like introducing them by mentioning the different object types in Python (ie floats, strings, lists) and then explaining that classes are a way to make 'custom objects' that group together relevant data and functions. Doesn't have to be included, but just a thought

The pandas and visualization bits look great otherwise - can't really think of anything to add/remove.