Pylons/pyramid — pull request #1487 by bertjwregeer (2014-12-15 02:26:25+00:00)
Title: Documentation/accept

As a follow up to: #1391 and #1481 this is a documentation change that moves accept from a predicate to a non-predicate.

This then explicitly documents that `not_` will not work with it since it is not technically a predicate.