from postmarker.core import PostmarkClient
Traceback (most recent call last):
File "", line 1, in
File "/home/hamish/dev/postmark/py/local/lib/python2.7/site-packages/postmarker/core.py", line 5, in
from ._compat import get_args, urljoin
File "/home/hamish/dev/postmark/py/local/lib/python2.7/site-packages/postmarker/_compat.py", line 13, in
from mock import patch # noqa
ImportError: No module named mock
postmarker requires mock to be installed (in python 2.7), but it doesn't declare this.