Real Ultimate Programming

The Home for People Who Like to Flip Out and Write Code

Notes From PyATL 2013-04-11


  • Google I/O is having baby conferences; there’s one here in Atlanta in May (via JR).
  • The Jam Sessions are probably moving; contact JR with suggestions.
  • Doug reminds us about the upcoming List of Consultants.
  • Rick has coupons for his book; I wonder if I should get one just in case I need to do MongoDB stuff in the future.
  • GTRI is hiring; Brighton Technologies (sp? where Dan Rocco is working, at any rate) is hiring, too.

The Tax Man Cometh (Daniel Rocco)

  • I’m a big fan of the csv module, too.
  • But not as big of fan of it as I am of namedtuple.
  • TIL about ._make.
  • I have to admit, even my feeble attempts at an NCAA bracket this year are better than tax brackets. Taxes just suck.
  • I like the functional flavor, here. Data processing pipelines are so awesome.
  • I feel a mod operator coming on.
  • I didn’t mention it before, but the Decimal usage is probably super awesome for people who are new to Python.
  • csvkit you say? That sounds extremely cool.
  • Good Question: what about DictReader?

The Trouble with Commas (Cliff Kachinske)

  • Fun gotcha: A trailing , will often create you a tuple, usually when you really don’t want one. If you start seeing complaints about mismatches in the number of arguments, it’s a good idea to look for trailing commas.
  • What really frustrates me is when I try to get clever and do something like this only to find out that Python isn’t creating me a tuple in this particular instance (for whatever reason).

A/B Testing with Cleaver (Ryan Petrello)

  • Didn’t use Visual Website Optimizer, Google Analytics, Optimizely, etc. because they wanted a Python-based solution that targeted developers, not marketers.
  • Found plenty of solutions, but they were all opinionated (to the point of requiring specific frameworks). This might not be a show-stopper for me, because tight integration usually means less config to mess with.
  • They wound up creating Cleaver (MIT licensed?), which only requires WSGI, basically.
  • Basically, you use WSGI middleware to add tracking.
  • It has a number of pluggable backends to store the experiment data.
  • You can add a weight to the tuple, easy-peasy. Does not currently support functions, but he seems confident it can be extended fairly easily.
  • Comes bundled with a lightweight web UI for viewing the results.
  • It’s cool. I wonder how much of the statistical heavy lifting it does (statistical power, significance, correlation with other changes, etc.)
  • Ryan says: They don’t do power, but it does do significance.
  • I missed this discussion while I was reading the README (curses!), but I believe the control is just the first option.

Back to flipping out…