求助，webpy 的东西在ML下跑不起了~

报错如下
Traceback (most recent call last):
File "/Library/Python/2.7/site-packages/web.py-0.37-py2.7.egg/web/wsgiserver/__init__.py", line 1245, in communicate
req.respond()
File "/Library/Python/2.7/site-packages/web.py-0.37-py2.7.egg/web/wsgiserver/__init__.py", line 775, in respond
self.server.gateway(self).respond()
File "/Library/Python/2.7/site-packages/web.py-0.37-py2.7.egg/web/wsgiserver/__init__.py", line 2018, in respond
response = self.req.server.wsgi_app(self.env, self.start_response)
File "/Library/Python/2.7/site-packages/web.py-0.37-py2.7.egg/web/httpserver.py", line 306, in __call__
return self.app(environ, xstart_response)
File "/Library/Python/2.7/site-packages/web.py-0.37-py2.7.egg/web/httpserver.py", line 274, in __call__
return self.app(environ, start_response)
File "/Library/Python/2.7/site-packages/web.py-0.37-py2.7.egg/web/application.py", line 279, in wsgi
result = self.handle_with_processors()
File "/Library/Python/2.7/site-packages/web.py-0.37-py2.7.egg/web/application.py", line 249, in handle_with_processors
return process(self.processors)
File "/Library/Python/2.7/site-packages/web.py-0.37-py2.7.egg/web/application.py", line 246, in process
raise self.internalerror()
File "/Library/Python/2.7/site-packages/web.py-0.37-py2.7.egg/web/application.py", line 478, in internalerror
return debugerror.debugerror()
File "/Library/Python/2.7/site-packages/web.py-0.37-py2.7.egg/web/debugerror.py", line 305, in debugerror
return web._InternalError(djangoerror())
File "/Library/Python/2.7/site-packages/web.py-0.37-py2.7.egg/web/debugerror.py", line 290, in djangoerror
djangoerror_r = Template(djangoerror_t, filename=__file__, filter=websafe)
File "/Library/Python/2.7/site-packages/web.py-0.37-py2.7.egg/web/template.py", line 846, in __init__
code = self.compile_template(text, filename)
File "/Library/Python/2.7/site-packages/web.py-0.37-py2.7.egg/web/template.py", line 926, in compile_template
ast = compiler.parse(code)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/compiler/transformer.py", line 51, in parse
return Transformer().parsesuite(buf)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/compiler/transformer.py", line 128, in parsesuite
return self.transform(parser.suite(text))
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/compiler/transformer.py", line 124, in transform
return self.compile_node(tree)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/compiler/transformer.py", line 167, in compile_node
raise WalkerError, ('unexpected node type', n)
WalkerError: ('unexpected node type', 339)

搜了好久也无果
我成功装上了 web.py 和 python-mysqldb 的, 如果一个 "hello world" 能运行成功，但是这个实在不知道怎么回事了。
它在 win 和 linux 下都能正常运行哒
谁帮帮我嘛~ 先谢谢了
如果有人能帮我看看代码的问题就太感谢了 T_T
https://github.com/Rabbit52/post_bar