I work in NYC, and the last time few times I was out in SV to speak at conferences and such, I was attired in my standard suit & tie. (I'm the guy with the dopey photo and name-in-bold on http://nycpython.org/ which I run.)
This ends up working to my advantage. No one expects the guy in the suit to go up on stage and show off a Tweetable FFT in Python or give an in-depth talk on CPython internals.
haha! obviously if all you're doing is calling the np.fft package it would fit in 140 chars, but this is the same false argument that people make all the time, "5 line web server" etc.
@jakevdp did most of the work; I just shortened it a bit to fit the 140-characters. https://twitter.com/jakevdp/status/399982844803424256
I believe it was the first time they held the event; everything was well-organised and went smoothly. I gave my Generators talk, which went over pretty well.
I met a lot of really cool Python programmers, and I'm looking forward to attending and speaking if they hold it again this year!
(By the way, swing by #python.fi on IRCNet!)
edit: And glad to hear you liked it!
http://www.meetup.com/HelPy-meetups/
https://twitter.com/pythonfinland
https://www.facebook.com/python.fi
And because this is Finland come to #python.fi at IRCNet.
We have had 100-150 PyCon attendees during the last two years. Meetups in Helsinki have 20-30 attendees.
Disclaimer: I am one of the organizers.