unknown-horizons/unknown-horizons — pull request #2125 by ChrisOelmueller (2013-06-14 21:04:25+00:00)
Title: Unify defaultdict arguments

As an example, we used both `defaultdict(int)` and `defaultdict(lambda: 0)` for the same thing. Since `int` is more idiomatic, prefer it over lambda constructs. In particular fixes funny stuff like `(lambda: set())`.