jwpeddle

  - Why is your example logger named d? It might seem nitpicky but it's hard
    to read an example with a meaningless single character variable.
  - "d.close() # stop logging" - what is this? What does it mean to "stop
    logging" and why do I want to?
  - "Add a coroutine" - I would wager the lay Python developer doesn't even
    know what this word means.
  - lggr.Lggr() - Why not just name the class Logger?
  - The default format variables are inconsistent about when words are
    separated with an underscore.
  - I can't make sense of the example logging calls. In one you pass a 
    dictionary as the second argument, in another you pass three strings as
    separate arguments. Why would anyone pass a message like this instead of
    just using standard string formatting? Especially when there's other
    legit arguments like extra. It's not even really clear why you'd want to
    pass something in extra instead of in the message.