***** Don't forget to run the example "test_plot.py". ****

A whole book "Python for Astronomers":
http://ugastro.berkeley.edu/pydecal/textbook.pdf

A short course in python for astronomers:
http://www.jb.man.ac.uk/~njj/plan.pdf

Some notes by our own Michael Kelly:
https://www.astro.umd.edu/~msk/computing/python/

===>> BUT this important site is focused on astronomy data:  
  Lots of useful stuff here (do check this out!): 
http://learn.astropy.org/
  Is this where I got the plot example?:
http://learn.astropy.org/FITS-images.html
  No, actually here:
http://docs.astropy.org/en/stable/generated/examples/index.html

Look at the change in the image quality of NGC 7027 (one we looked
at) with new reporcessing ...
https://www.planetary.org/explore/space-topics/space-imaging/downloading-hubble-data.html