puzzle comment for dip

[Sunqinying]

At "Instantiating defaults",

> # Create a new figure of size 8x6 points, using 100 dots per inch
>plt.figure(figsize=(8,6), dpi=80)

dpi means "dots per inch", why dpi in comment is 100, in parameter is 80 ?

[rougier]

I would say typo... 😄