Looking for a Python sparkline library, I found Perry Geo's excellent code. "In the minimalist spirit of sparklines, the interface was kept simple":
a = [32.5,35.2,39.9,40.8,43.9,48.2,50.5,51.9,53.1,55.9,60.7,64.4]
That's it, and here's the result. Just download his single Python module, start up interactive Python, and off you go.