diff --git a/Lib/trace.py b/Lib/trace.py
index 6d5aef0..7d504c1 100644
--- a/Lib/trace.py
+++ b/Lib/trace.py
@@ -124,7 +124,7 @@
         self._ignore = { '<string>': 1 }
 
     def names(self, filename, modulename):
-        if self._ignore.has_key(modulename):
+        if modulename in self._ignore:
             return self._ignore[modulename]
 
         # haven't seen this one before, so see if the module name is