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-rw-r--r--test/test_metrics.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/test/test_metrics.py b/test/test_metrics.py
index 8d35f55..308ea58 100644
--- a/test/test_metrics.py
+++ b/test/test_metrics.py
@@ -469,7 +469,7 @@ def test_reporter(metrics):
for key in list(expected.keys()):
metrics = expected.pop(key)
- expected['foo.%s' % key] = metrics
+ expected['foo.%s' % (key,)] = metrics
assert expected == foo_reporter.snapshot()