install error

[Tukali]

centos6 python2.6

when i run python setup.py install ,show it:

Processing html5lib-1.0.1.tar.gz Running html5lib-1.0.1/setup.py -q bdist_egg --dist-dir /tmp/easy_install-2O6H6j/html5lib-1.0.1/egg-dist-tmp-qViNVM Traceback (most recent call last): File "setup.py", line 325, in **extra File "/usr/lib64/python2.6/distutils/core.py", line 152, in setup dist.run_commands() File "/usr/lib64/python2.6/distutils/dist.py", line 975, in run_commands self.run_command(cmd) File "/usr/lib64/python2.6/distutils/dist.py", line 995, in run_command cmd_obj.run() File "/usr/lib/python2.6/site-packages/setuptools/command/install.py", line 73, in run self.do_egg_install() File "/usr/lib/python2.6/site-packages/setuptools/command/install.py", line 101, in do_egg_install cmd.run() File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 236, in run self.easy_install(spec, not self.no_deps) File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 452, in easy_install return self.install_item(None, spec, tmpdir, deps, True) File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 504, in install_item self.process_distribution(spec, dist, deps) File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 545, in process_distribution [requirement], self.local_index, self.easy_install File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 538, in resolve dist = best[req.key] = env.best_match(req, self, installer) File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 780, in best_match return self.obtain(req, installer) # try and download/install File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 792, in obtain return installer(requirement) File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 472, in easy_install return self.install_item(spec, dist.location, tmpdir, deps) File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 502, in install_item dists = self.install_eggs(spec, download, tmpdir) File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 681, in install_eggs return self.build_and_install(setup_script, setup_base) File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 958, in build_and_install self.run_setup(setup_script, setup_base, args) File "/usr/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 947, in run_setup run_setup(setup_script, args) File "/usr/lib/python2.6/site-packages/setuptools/sandbox.py", line 29, in run_setup lambda: execfile( File "/usr/lib/python2.6/site-packages/setuptools/sandbox.py", line 70, in run return func() File "/usr/lib/python2.6/site-packages/setuptools/sandbox.py", line 31, in {'file':setup_script, 'name':'main'} File "setup.py", line 54, in paths = os.environ['PATH'].split(':') AttributeError: 'module' object has no attribute 'MarkerEvaluation'

what can i do ?