diff -r 649d3ac37a12 -r d783f945a701 mercurial/revset.py
--- a/mercurial/revset.py	Sun Oct 06 19:25:18 2019 -0400
+++ b/mercurial/revset.py	Mon Oct 07 00:04:04 2019 -0400
@@ -577,7 +577,7 @@
             bms.add(repo[bmrev].rev())
         else:
             matchrevs = set()
-            for name, bmrev in repo._bookmarks.iteritems():
+            for name, bmrev in pycompat.iteritems(repo._bookmarks):
                 if matcher(name):
                     matchrevs.add(bmrev)
             for bmrev in matchrevs:
@@ -1612,7 +1612,7 @@
             )
         namespaces.add(repo.names[pattern])
     else:
-        for name, ns in repo.names.iteritems():
+        for name, ns in pycompat.iteritems(repo.names):
             if matcher(name):
                 namespaces.add(ns)
 
@@ -2681,7 +2681,7 @@
 def loadpredicate(ui, extname, registrarobj):
     """Load revset predicates from specified registrarobj
     """
-    for name, func in registrarobj._table.iteritems():
+    for name, func in pycompat.iteritems(registrarobj._table):
         symbols[name] = func
         if func._safe:
             safesymbols.add(name)