bkad/python-stylus — pull request #2 by tonyseek (2013-12-28 14:23:18+00:00)
Title: Fix up the mutable default argument problem.

http://docs.python-guide.org/en/latest/writing/gotchas/#mutable-default-arguments

The mutable default argument will be modified in different calling. Copying them will fix up this problem.

@bkad Please review it.