The last plenary session for PyCon 2010 was on Sunday. In it, Van Lindberg told us that if we included all the vendors, our conference had hit over 1100 people. What that meant is that for PyCon 2011, they would probably have to put an attendance cap of 1500 so that we wouldn’t run out of room at the current venue. Is this good? I don’t really know. Sometimes it felt like it was already too big. Time will tell.

The first Plenary of the morning was given by Frank Wierzbicki of Sauce Labs and he talked about the “State of Jython”, the Java implementation of Python. It turns out that version 2.5.1 has really good compatibility with the normal Python implementation such that Jython passes almost all of CPython’s test suite. Jython also work with most Java libraries and applications, so you can get the best of both worlds.

Wierzbicki went on to say that any pure Python code should work in Jython. He gave examples of SqlAlchemy, Django, Pylons, pip, web2py and distribute as working in Jython. The current plan for Jython is to shoot for a 2.6 release this summer to get Jython to Python’s 2.6 status and then, depending on how far along Python developers are in porting their applications to Python 3, he would like to have Jython start porting to 3.x as well.

He put a call out for assistance on the Jython project as they no longer have sponsors. He then wrapped it up with a demo using the Sikuli script by Joseph Chang from MIT that used Jython to play Bejeweled. Weird, but cool!

The second plenary was on the “State of Unladen Swallow” and given by Collin Winter who works for Google. He didn’t use slides since he said that we could refer to a talk he’d given on Saturday if we needed visuals. Winter told us how their interpreter was faster than Jython and PyPy, but that it could be optimized up the wazoo. He announced that Guido had approved the merging of Unladen Swallow into the Python 3.x code base, hopefully in time for 3.3. Winter said that he hoped that by merging the code, they would gain many more developers who could get the optimizing process up to warp speed and make a really fast interpreter. Finally, Winter noted that Unladen Swallow has 100% compatibility with all current Python code and gave the example that Unladen Swallow made Django run 20% faster.

The final plenary was given by the entrepreneur Antonio Rodriguez, founder of tabblo (which he subsequently sold to HP). Here are a few of my notes from the talk:

  • success = [e.hack() for e in employees]
  • Every machine can run the full stack. Anyone can check out the full tree and build the full product. Anyone can make a change to any part of the source tree. Everyone has commit bits. Anyone can push to production.
  • 98% of companies start with around 10 people
  • Business vs. tech is a false dichotomy
  • The lean startup should be the emaciated startup

The challenges that he saw for Python were getting people to commit to porting to 3.x so the split wouldn’t continue, need more batteries in the standard library and the packaging problem. I highly recommend waiting for the video and watching it as I am not explaining his talk very well and I thought he gave the best talk that I attended.

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