[PATCH 8 of 8 v2] python3: handle __code__/func_code divergence

[timeless]

# HG changeset patch
# User timeless <timeless at mozdev.org>
# Date 1459273403 0
#      Tue Mar 29 17:43:23 2016 +0000
# Node ID 4986c2a190dd3dfe38c40ddb121acef479c6cb78
# Parent  7049e93dc5766ba35e91fd15755f4c5a899bfcc0
python3: handle __code__/func_code divergence

diff --git a/mercurial/util.py b/mercurial/util.py
--- a/mercurial/util.py
+++ b/mercurial/util.py
@@ -451,10 +451,18 @@
     "%b %Y",
     )
 
+try:
+    version.func_code
+    def funccode(func):
+        return func.func_code
+except AttributeError:
+    def funccode(func):
+        return func.__code__
+
 def cachefunc(func):
     '''cache the result of function calls'''
     # XXX doesn't handle keywords args
-    if func.func_code.co_argcount == 0:
+    if funccode(func).co_argcount == 0:
         cache = []
         def f():
             if len(cache) == 0:
@@ -462,7 +470,7 @@
             return cache[0]
         return f
     cache = {}
-    if func.func_code.co_argcount == 1:
+    if funccode(func).co_argcount == 1:
         # we gain a small amount of time because
         # we don't need to pack/unpack the list
         def f(arg):
@@ -704,7 +712,7 @@
     '''cache most recent results of function calls'''
     cache = {}
     order = collections.deque()
-    if func.func_code.co_argcount == 1:
+    if funccode(func).co_argcount == 1:
         def f(arg):
             if arg not in cache:
                 if len(cache) > 20:
diff --git a/tests/test-check-py3-compat.t b/tests/test-check-py3-compat.t
--- a/tests/test-check-py3-compat.t
+++ b/tests/test-check-py3-compat.t
@@ -124,13 +124,13 @@
   contrib/import-checker.py: invalid syntax: Missing parentheses in call to 'print' (<unknown>, line *) (glob)
   doc/hgmanpage.py: invalid syntax: invalid syntax (<unknown>, line *) (glob)
   hgext/automv.py: error importing module: <SyntaxError> invalid syntax (commands.py, line *) (line *) (glob)
-  hgext/blackbox.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  hgext/blackbox.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   hgext/bugzilla.py: error importing module: <ImportError> No module named 'urlparse' (line *) (glob)
-  hgext/censor.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  hgext/censor.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   hgext/chgserver.py: error importing module: <ImportError> No module named 'SocketServer' (line *) (glob)
-  hgext/children.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  hgext/churn.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  hgext/clonebundles.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  hgext/children.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  hgext/churn.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  hgext/clonebundles.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   hgext/color.py: invalid syntax: invalid syntax (<unknown>, line *) (glob)
   hgext/convert/bzr.py: error importing module: <SystemError> Parent module 'hgext.convert' not loaded, cannot perform relative import (line *) (glob)
   hgext/convert/common.py: error importing module: <ImportError> No module named 'cPickle' (line *) (glob)
@@ -141,69 +141,69 @@
   hgext/convert/filemap.py: error importing module: <SystemError> Parent module 'hgext.convert' not loaded, cannot perform relative import (line *) (glob)
   hgext/convert/git.py: error importing module: <SystemError> Parent module 'hgext.convert' not loaded, cannot perform relative import (line *) (glob)
   hgext/convert/gnuarch.py: error importing module: <SystemError> Parent module 'hgext.convert' not loaded, cannot perform relative import (line *) (glob)
-  hgext/convert/hg.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  hgext/convert/hg.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   hgext/convert/monotone.py: error importing module: <SystemError> Parent module 'hgext.convert' not loaded, cannot perform relative import (line *) (glob)
   hgext/convert/p*.py: error importing module: <SystemError> Parent module 'hgext.convert' not loaded, cannot perform relative import (line *) (glob)
   hgext/convert/subversion.py: error importing module: <ImportError> No module named 'cPickle' (line *) (glob)
   hgext/convert/transport.py: error importing module: <ImportError> No module named 'svn.client' (line *) (glob)
-  hgext/eol.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  hgext/extdiff.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  hgext/eol.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  hgext/extdiff.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   hgext/factotum.py: error importing: <ImportError> No module named 'httplib' (error at url.py:*) (glob)
   hgext/fetch.py: error importing module: <SyntaxError> invalid syntax (commands.py, line *) (line *) (glob)
   hgext/fsmonitor/watchmanclient.py: error importing module: <SystemError> Parent module 'hgext.fsmonitor' not loaded, cannot perform relative import (line *) (glob)
   hgext/gpg.py: error importing module: <SyntaxError> invalid syntax (commands.py, line *) (line *) (glob)
-  hgext/graphlog.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  hgext/hgcia.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  hgext/hgk.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  hgext/graphlog.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  hgext/hgcia.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  hgext/hgk.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   hgext/highlight/highlight.py: error importing module: <ImportError> No module named 'pygments' (line *) (glob)
   hgext/histedit.py: error importing module: <SyntaxError> invalid syntax (bundle*.py, line *) (line *) (glob)
   hgext/keyword.py: error importing: <ImportError> No module named 'BaseHTTPServer' (error at common.py:*) (glob)
   hgext/largefiles/basestore.py: error importing: <SyntaxError> invalid syntax (bundle*.py, line *) (error at bundlerepo.py:*) (glob)
   hgext/largefiles/lfcommands.py: error importing: <SyntaxError> invalid syntax (bundle*.py, line *) (error at bundlerepo.py:*) (glob)
-  hgext/largefiles/lfutil.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  hgext/largefiles/lfutil.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   hgext/largefiles/localstore.py: error importing module: <ImportError> No module named 'lfutil' (line *) (glob)
   hgext/largefiles/overrides.py: error importing: <SyntaxError> invalid syntax (bundle*.py, line *) (error at bundlerepo.py:*) (glob)
   hgext/largefiles/proto.py: error importing: <ImportError> No module named 'httplib' (error at httppeer.py:*) (glob)
   hgext/largefiles/remotestore.py: error importing: <SyntaxError> invalid syntax (bundle*.py, line *) (error at wireproto.py:*) (glob)
-  hgext/largefiles/reposetup.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  hgext/largefiles/reposetup.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   hgext/largefiles/uisetup.py: error importing module: <SyntaxError> invalid syntax (archival.py, line *) (line *) (glob)
   hgext/largefiles/wirestore.py: error importing module: <ImportError> No module named 'lfutil' (line *) (glob)
   hgext/mq.py: error importing module: <SyntaxError> invalid syntax (commands.py, line *) (line *) (glob)
-  hgext/notify.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  hgext/pager.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  hgext/patchbomb.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  hgext/purge.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  hgext/notify.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  hgext/pager.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  hgext/patchbomb.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  hgext/purge.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   hgext/rebase.py: error importing: <SyntaxError> invalid syntax (bundle*.py, line *) (error at bundlerepo.py:*) (glob)
-  hgext/record.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  hgext/relink.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  hgext/schemes.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  hgext/share.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  hgext/record.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  hgext/relink.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  hgext/schemes.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  hgext/share.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   hgext/shelve.py: error importing module: <SyntaxError> invalid syntax (bundle*.py, line *) (line *) (glob)
-  hgext/strip.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  hgext/strip.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   hgext/transplant.py: error importing: <SyntaxError> invalid syntax (bundle*.py, line *) (error at bundlerepo.py:*) (glob)
   mercurial/archival.py: invalid syntax: invalid syntax (<unknown>, line *) (glob)
-  mercurial/branchmap.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  mercurial/branchmap.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   mercurial/bundle*.py: invalid syntax: invalid syntax (<unknown>, line *) (glob)
   mercurial/bundlerepo.py: error importing module: <SyntaxError> invalid syntax (bundle*.py, line *) (line *) (glob)
-  mercurial/changegroup.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/changelog.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/cmdutil.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  mercurial/changegroup.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/changelog.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/cmdutil.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   mercurial/commands.py: invalid syntax: invalid syntax (<unknown>, line *) (glob)
   mercurial/commandserver.py: error importing module: <ImportError> No module named 'SocketServer' (line *) (glob)
-  mercurial/context.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/copies.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/crecord.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/dirstate.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/discovery.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/dispatch.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  mercurial/context.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/copies.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/crecord.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/dirstate.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/discovery.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/dispatch.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   mercurial/exchange.py: error importing module: <SyntaxError> invalid syntax (bundle*.py, line *) (line *) (glob)
-  mercurial/extensions.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/filelog.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/filemerge.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/fileset.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  mercurial/extensions.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/filelog.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/filemerge.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/fileset.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   mercurial/formatter.py: error importing module: <ImportError> No module named 'cPickle' (line *) (glob)
-  mercurial/graphmod.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/help.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  mercurial/graphmod.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/help.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   mercurial/hg.py: error importing: <SyntaxError> invalid syntax (bundle*.py, line *) (error at bundlerepo.py:*) (glob)
   mercurial/hgweb/common.py: error importing module: <ImportError> No module named 'BaseHTTPServer' (line *) (glob)
   mercurial/hgweb/hgweb_mod.py: error importing module: <SystemError> Parent module 'mercurial.hgweb' not loaded, cannot perform relative import (line *) (glob)
@@ -214,37 +214,37 @@
   mercurial/hgweb/webcommands.py: error importing module: <SystemError> Parent module 'mercurial.hgweb' not loaded, cannot perform relative import (line *) (glob)
   mercurial/hgweb/webutil.py: error importing module: <SystemError> Parent module 'mercurial.hgweb' not loaded, cannot perform relative import (line *) (glob)
   mercurial/hgweb/wsgicgi.py: error importing module: <SystemError> Parent module 'mercurial.hgweb' not loaded, cannot perform relative import (line *) (glob)
-  mercurial/hook.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  mercurial/hook.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   mercurial/httpclient/_readers.py: error importing module: <ImportError> No module named 'httplib' (line *) (glob)
   mercurial/httpconnection.py: error importing: <ImportError> No module named 'httplib' (error at __init__.py:*) (glob)
   mercurial/httppeer.py: error importing module: <ImportError> No module named 'httplib' (line *) (glob)
   mercurial/keepalive.py: error importing module: <ImportError> No module named 'httplib' (line *) (glob)
-  mercurial/localrepo.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  mercurial/localrepo.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   mercurial/mail.py: error importing module: <AttributeError> module 'email' has no attribute 'Header' (line *) (glob)
-  mercurial/manifest.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/merge.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/namespaces.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/patch.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  mercurial/manifest.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/merge.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/namespaces.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/patch.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   mercurial/pure/parsers.py: error importing module: <ImportError> No module named 'mercurial.pure.node' (line *) (glob)
   mercurial/repair.py: error importing module: <SyntaxError> invalid syntax (bundle*.py, line *) (line *) (glob)
-  mercurial/revlog.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/revset.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/scmutil.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  mercurial/revlog.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/revset.py: error importing module: <AttributeError> 'dict' object has no attribute 'iteritems' (line *) (glob)
+  mercurial/scmutil.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   mercurial/scmwindows.py: error importing module: <ImportError> No module named '_winreg' (line *) (glob)
-  mercurial/simplemerge.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  mercurial/simplemerge.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   mercurial/sshpeer.py: error importing: <SyntaxError> invalid syntax (bundle*.py, line *) (error at wireproto.py:*) (glob)
-  mercurial/sshserver.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/statichttprepo.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/store.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/streamclone.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/subrepo.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/templatefilters.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/templatekw.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
-  mercurial/templater.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  mercurial/sshserver.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/statichttprepo.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/store.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/streamclone.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/subrepo.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/templatefilters.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/templatekw.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
+  mercurial/templater.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   mercurial/ui.py: error importing: <ImportError> No module named 'cPickle' (error at formatter.py:*) (glob)
-  mercurial/unionrepo.py: error importing: <AttributeError> 'function' object has no attribute 'func_code' (error at util.py:*) (glob)
+  mercurial/unionrepo.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   mercurial/url.py: error importing module: <ImportError> No module named 'httplib' (line *) (glob)
-  mercurial/verify.py: error importing module: <AttributeError> 'function' object has no attribute 'func_code' (line *) (glob)
+  mercurial/verify.py: error importing: <AttributeError> 'dict' object has no attribute 'iteritems' (error at revset.py:*) (glob)
   mercurial/win*.py: error importing module: <ImportError> No module named 'msvcrt' (line *) (glob)
   mercurial/windows.py: error importing module: <ImportError> No module named '_winreg' (line *) (glob)
   mercurial/wireproto.py: error importing module: <SyntaxError> invalid syntax (bundle*.py, line *) (line *) (glob)