--- a/mercurial/cmdutil.py	Thu Oct 26 23:59:21 2006 -0500
+++ b/mercurial/cmdutil.py	Fri Oct 27 00:38:42 2006 -0500
@@ -140,7 +140,7 @@
 
 def walk(repo, pats=[], opts={}, node=None, head='', badmatch=None):
     files, matchfn, anypats = matchpats(repo, pats, opts, head)
-    exact = dict(zip(files, files))
+    exact = dict.fromkeys(files)
     for src, fn in repo.walk(node=node, files=files, match=matchfn,
                              badmatch=badmatch):
         yield src, fn, util.pathto(repo.getcwd(), fn), fn in exact

--- a/mercurial/commands.py	Thu Oct 26 23:59:21 2006 -0500
+++ b/mercurial/commands.py	Fri Oct 27 00:38:42 2006 -0500
@@ -106,7 +106,7 @@
 
     if not slowpath and not files:
         # No files, no patterns.  Display all revs.
-        wanted = dict(zip(revs, revs))
+        wanted = dict.fromkeys(revs)
     copies = []
     if not slowpath:
         # Only files, no patterns.  Check the history of each file.
@@ -210,7 +210,7 @@
         ff = followfilter()
         stop = min(revs[0], revs[-1])
         for x in xrange(rev, stop-1, -1):
-            if ff.match(x) and wanted.has_key(x):
+            if ff.match(x) and x in wanted:
                 del wanted[x]
 
     def iterate():