Python Cool Tricks
Nice. Some are exotic, but list comprehensions, the empty string trick are commonly handy, and the json pretty-printing maybe less so but good to know.
The note about dir() and help() are great if you're not already familiar (you should be).
The Python enum trick is a new one by me:
Bolt, Green, Johnson, Mom = range(4)
PlayerRanking.Mom -> 4
As is the 'launch an interactive shell'
import code; code.interact(local = locals())
That beats printf-debugging by a country mile :-)