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-rw-r--r--repoze/bfg/exceptions.py8
1 files changed, 8 insertions, 0 deletions
diff --git a/repoze/bfg/exceptions.py b/repoze/bfg/exceptions.py
index b0922c1e3..00cb76883 100644
--- a/repoze/bfg/exceptions.py
+++ b/repoze/bfg/exceptions.py
@@ -40,3 +40,11 @@ class URLDecodeError(UnicodeDecodeError):
class ConfigurationError(ZCE):
""" Raised when inappropriate input values are supplied to an API
method of a :term:`Configurator`"""
+
+class PredicateMismatch(NotFound):
+ """ Internal exception (not an API) raised by multiviews when no
+ view matches. This exception subclasses the ``NotFound``
+ exception only one reason: if it reaches the main exception
+ handler, it should be treated like a ``NotFound`` by any exception
+ view registrations."""
+