15.6) More Labels
If you want to add a title and some labels, you can add commands before you create your plot with show().
To add a title with:
plt.title('My first plot',size=36.0)
To add some label within the plot:
plt.text(2.5, 2.0, 'label', size=18.0)
The first two numbers here correspond to the position of the label within the plot.
Add these to your program and re-run it. Change the size of the title and the position of the label.