Which is faster? (if not b in m) or (if m.count(b) > 0)

[Peter Hansen]

Farel wrote:
> Thank you, Peter!  Please understand, I was attempting to get more info
> on the WHY x is faster than y...  from those with more experience.
> Timer cannot give me that info.

Thanks for clarifying.  For future reference, it's traditional in 
English to use the word "why" in a question when you're asking WHY, 
rather than, say, phrasing the question like this:

Farel wrote:

 >> Tim, Are you saying that:
 >>      not (b in m)
 >> is faster than:
 >>     b not in m
 >> ????


-Peter