--- a/mercurial/filelog.py	Mon Jan 21 13:37:27 2008 -0200
+++ b/mercurial/filelog.py	Sun Jan 20 14:39:25 2008 +0100
@@ -58,7 +58,7 @@
         if self.parents(node)[0] != nullid:
             return False
         m = self._readmeta(node)
-        if m and m.has_key("copy"):
+        if m and "copy" in m:
             return (m["copy"], bin(m["copyrev"]))
         return False