Code review comment for lp:~teknico/charms/precise/juju-gui/1171516-more-backend-tests

bcsaller wrote:
> Isn't there defaultdict in the Python std lib collections for this?

Indeed there is. However it does not override "get", so it's not a huge
win. But it may make sense anyway, actually.

https://codereview.appspot.com/9121043/