Don't use dict.iterkeys()

Replace list(dict.iterkeys()) with list(dict). The call to iterkeys() is
useless and the iterkeys() method of dictionaries was removed in
Python 3

Change-Id: I16733643d4b92fe8134eec2549bbd679fe75fb9c

diff --git a/tools/colorizer.py b/tools/colorizer.py
index 423e89817e79a8370211952e72d1f7e95c747fd3..4498d9a5e83e6e9a0fb4da1ee462a6aad7f101aa 100755 (executable)
--- a/tools/colorizer.py
+++ b/tools/colorizer.py
@@ -274,7 +274,7 @@ class NovaTestResult(testtools.TestResult):
         self.stopTestRun()
 
     def stopTestRun(self):
-        for cls in list(self.results.iterkeys()):
+        for cls in list(self.results):
             self.writeTestCase(cls)
         self.stream.writeln()
         self.writeSlowTests()