darjeeling/python-blake2 — pull request #4 by pgonee (2013-02-19 07:44:30+00:00)
Title: `key_length` must have a default value.

When `key` is `None`, `key_length` wouldn't be set by `PyArg_ParseTupleAndKeywords`, since format `s` doesn't accept `None`.
Thus I added a proper default value for it, and also test case for it.