Enable some tests against py33

Change-Id: Ibaf141784cbe08230cdb8f9aba3e5f376e7e1b93

1 files changed, 1 insertions, 1 deletions

diff --git a/ceilometer/utils.py b/ceilometer/utils.py
index 38f157f6..b26d99f5 100644
--- a/ceilometer/utils.py
+++ b/ceilometer/utils.py
@@ -58,7 +58,7 @@ def recursive_keypairs(d, separator=':'):
 def restore_nesting(d, separator=':'):
     """Unwinds a flattened dict to restore nesting."""
     d = copy.copy(d) if any([separator in k for k in d.keys()]) else d
-    for k, v in d.items():
+    for k, v in d.copy().items():
         if separator in k:
             top, rem = k.split(separator, 1)
             nest = d[top] if isinstance(d.get(top), dict) else {}