pyclectic/pyassert — pull request #2 by fraisse (2014-02-25 12:43:35+00:00)
Title: Adds the missing 'does_not_contain' matcher for List/ Tuple

The ```pyassert``` documentation talks about the contains and the does_not_contain matcher for list and tuples. However, the **does_not_contain** matcher **is not provided**.
This PR proposes an implementation of this matcher providing a ```negated=True``` on the ```ContainsMatcher```