add __bool__ alias to __nonzero__ methods

Signed-off-by: Adrian Tschira <nota@notafile.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/synapse/notifier.py b/synapse/notifier.py

index ef042681bc..0e40a4aad6 100644
--- a/synapse/notifier.py
+++ b/synapse/notifier.py
@@ -144,6 +144,7 @@ class _NotifierUserStream(object):
 class EventStreamResult(namedtuple("EventStreamResult", ("events", "tokens"))):
     def __nonzero__(self):
         return bool(self.events)
+    __bool__ = __nonzero__  # python3
 
 
 class Notifier(object):