add Duration.__nonzero__()

diff --git a/telemeta/models/core.py b/telemeta/models/core.py
index c0618c2d7b4b5302c48014b56b0dd6e8edb9e2d0..50455b769c9b8e5daa8f13a45d000e27876ec420 100644 (file)
--- a/telemeta/models/core.py
+++ b/telemeta/models/core.py
@@ -58,6 +58,9 @@ class Duration(object):
     def __add__(self, other):
         return self.__decorate(self._delta.__add__, other)
 
+    def __nonzero__(self):
+        return self._delta.__nonzero__()
+
     def __str__(self):
         hours   = self._delta.days * 24 + self._delta.seconds / 3600
         minutes = (self._delta.seconds % 3600) / 60