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-rw-r--r--openstack/common/threadgroup.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/openstack/common/threadgroup.py b/openstack/common/threadgroup.py
index 9d2f0b6..f501889 100644
--- a/openstack/common/threadgroup.py
+++ b/openstack/common/threadgroup.py
@@ -53,7 +53,7 @@ class Thread(object):
return self.thread.wait()
-class ThreadGroup():
+class ThreadGroup(object):
"""
The point of this class is to:
- keep track of timers and greenthreads (making it easier to stop them