docopt/docopt — pull request #202 by krisztianfekete (2014-07-07 11:26:16+00:00)
Title: Better error message when None is passed in as doc

`__doc__` becomes None, when there is an import before the string, which happened for at least two users, when using the construct `from __future__ import ...`, which is also sensitive to placement within file.

Fixes #133