mercurial-2.0.win32-py2.6.exe をインストールして
hg.cmd ってバッチコマンドを以下で作って
@python C:\Python26\Lib\site-packages\mercurial\hg.pyo %*

実行したらエラーになるんだが何で？

C:\Users\xxx\Documents\mercurial>hg.cmd
Traceback (most recent call last):
File "C:\Python26\Lib\site-packages\mercurial\hg.py", line 12, in <module>
import localrepo, bundlerepo, httprepo, sshrepo, statichttprepo, bookmarks
File "C:\Python26\Lib\site-packages\mercurial\localrepo.py", line 10, in <modu
le>
import repo, changegroup, subrepo, discovery, pushkey
File "C:\Python26\Lib\site-packages\mercurial\subrepo.py", line 11, in <module
>
import config, scmutil, util, node, error, cmdutil, bookmarks
File "C:\Python26\Lib\site-packages\mercurial\scmutil.py", line 9, in <module>

import util, error, osutil, revset, similar, encoding
File "C:\Python26\Lib\site-packages\mercurial\revset.py", line 12, in <module>

import match as matchmod
File "C:\Python26\Lib\site-packages\mercurial\match.py", line 9, in <module>
import scmutil, util, fileset
File "C:\Python26\Lib\site-packages\mercurial\fileset.py", line 81, in <module
>
parse = parser.parser(tokenize, elements).parse
AttributeError: 'module' object has no attribute 'parser'

C:\Users\xxx\Documents\mercurial>

このエラーって何で出るの？