Sadly that's a known issue, has already been fixed on Genshi and we are only waiting a new release.
Refer to http://turbogears.readthedocs.org/en/latest/cookbook/upgrading.html#genshi-work-around-available-for-python3-4 for a quick fix On Fri, Dec 11, 2015 at 10:56 PM, Kay Pac <[email protected]> wrote: > Hello everyone, > > I want to build a web interface to a database that I am populating with > python and sqlalchemy. > I am running windows 8, not windows 8.1 and python 3.4. I have used the > pytho.org installer for python. > > after installing tg.devtools, generating the quickstart project and > installing it as specified in the tutorial and running "gearbox serve > --reload --debug" I get an exception when i try to load the root URL /. > > The exception page starts with: > > builtins.Exception > > Exception: Unhandled node type <class '_ast.NameConstant'> > > and then it has a massive traceback. It may not be a problem with > turbogears but i don't know where else to start. > it appears to throw the exception in "genshi" > > I know I probably haven't supplied information, but I am hoping someone > has run into this. Here is the full exception traceback: > > builtins.Exception > > Exception: Unhandled node type <class '_ast.NameConstant'> > Traceback *(most recent call last)* > > - File "D:\Python34\lib\site-packages\tg\wsgiapp.py", line *122*, in > __call__ > > response = self.wrapped_dispatch(controller, environ, context) > > - File "D:\Python34\lib\site-packages\tg\appwrappers\errorpage.py", > line *56*, in __call__ > > resp = self.next_handler(controller, environ, context) > > - File > "D:\Python34\lib\site-packages\tg\appwrappers\transaction_manager.py", > line *107*, in __call__ > > reraise(*exc_info) > > - File "D:\Python34\lib\site-packages\tg\_compat.py", line *81*, in > reraise > > raise value > > - File > "D:\Python34\lib\site-packages\tg\appwrappers\transaction_manager.py", > line *83*, in __call__ > > response = self.next_handler(controller, environ, context) > > - File "D:\Python34\lib\site-packages\tg\appwrappers\caching.py", line > *54*, in __call__ > > return self.next_handler(controller, environ, context) > > - File "D:\Python34\lib\site-packages\tg\appwrappers\session.py", line > *71*, in __call__ > > response = self.next_handler(controller, environ, context) > > - File "D:\Python34\lib\site-packages\tg\appwrappers\identity.py", > line *47*, in __call__ > > return self.next_handler(controller, environ, context) > > - File "D:\Python34\lib\site-packages\tg\appwrappers\i18n.py", line > *71*, in __call__ > > return self.next_handler(controller, environ, context) > > - File "D:\Python34\lib\site-packages\tg\wsgiapp.py", line *295*, in > dispatch > > return controller(environ, context) > > - File "d:\current2\python\tg\dict\dict\lib\base.py", line *27*, in > __call__ > > return TGController.__call__(self, environ, context) > > - File "D:\Python34\lib\site-packages\tg\controllers\dispatcher.py", > line *128*, in __call__ > > response = self._perform_call(context) > > - File "D:\Python34\lib\site-packages\tg\controllers\dispatcher.py", > line *109*, in _perform_call > > r = self._call(func, params, remainder=remainder, context=context) > > - File > "D:\Python34\lib\site-packages\tg\controllers\decoratedcontroller.py", > line *127*, in _call > > response = self._render_response(context, controller, output) > > - File > "D:\Python34\lib\site-packages\tg\controllers\decoratedcontroller.py", > line *237*, in _render_response > > template_name=template_name, **render_params) > > - File "D:\Python34\lib\site-packages\tg\render.py", line *212*, in > render > > kwargs['result'] = render_function(template_name, tg_vars, **kwargs) > > - File "D:\Python34\lib\site-packages\tg\renderers\genshi.py", line > *212*, in __call__ > > ns_options=('doctype', 'method'), **kwargs) > > - File "D:\Python34\lib\site-packages\tg\render.py", line *278*, in > cached_template > > return render_func() > > - File "D:\Python34\lib\site-packages\tg\renderers\genshi.py", line > *208*, in render_template > > encoding=None) > > - File "D:\Python34\lib\site-packages\genshi\core.py", line *184*, in > render > > return encode(generator, method=method, encoding=encoding, out=out) > > - File "D:\Python34\lib\site-packages\genshi\output.py", line *57*, in > encode > > return _encode(''.join(list(iterator))) > > - File "D:\Python34\lib\site-packages\genshi\output.py", line *350*, > in __call__ > > for kind, data, pos in stream: > > - File "D:\Python34\lib\site-packages\genshi\output.py", line *829*, > in __call__ > > for kind, data, pos in stream: > > - File "D:\Python34\lib\site-packages\genshi\output.py", line *669*, > in __call__ > > for kind, data, pos in stream: > > - File "D:\Python34\lib\site-packages\genshi\output.py", line *774*, > in __call__ > > for kind, data, pos in chain(stream, [(None, None, None)]): > > - File "D:\Python34\lib\site-packages\genshi\output.py", line *594*, > in __call__ > > for ev in stream: > > - File "D:\Python34\lib\site-packages\genshi\core.py", line *289*, in > _ensure > > for event in stream: > > - File "D:\Python34\lib\site-packages\genshi\template\base.py", line > *630*, in _include > > for event in tmpl.generate(ctxt, **vars): > > - File "D:\Python34\lib\site-packages\genshi\template\base.py", line > *544*, in generate > > stream = self.stream > > - File "D:\Python34\lib\site-packages\genshi\template\base.py", line > *454*, in stream > > self._stream = list(self._prepare(self._stream)) > > - File "D:\Python34\lib\site-packages\genshi\template\base.py", line > *490*, in _prepare > > yield kind, (directives, list(substream)), pos > > - File "D:\Python34\lib\site-packages\genshi\template\base.py", line > *490*, in _prepare > > yield kind, (directives, list(substream)), pos > > - File "D:\Python34\lib\site-packages\genshi\template\base.py", line > *485*, in _prepare > > namespaces, pos) > > - File "D:\Python34\lib\site-packages\genshi\template\directives.py", > line *397*, in attach > > namespaces, pos) > > - File "D:\Python34\lib\site-packages\genshi\template\directives.py", > line *82*, in attach > > return cls(value, template, namespaces, *pos[1:]), stream > > - File "D:\Python34\lib\site-packages\genshi\template\directives.py", > line *60*, in __init__ > > self.expr = self._parse_expr(value, template, lineno, offset) > > - File "D:\Python34\lib\site-packages\genshi\template\directives.py", > line *109*, in _parse_expr > > lookup=template.lookup) or None > > - File "D:\Python34\lib\site-packages\genshi\template\eval.py", line > *93*, in __init__ > > filename=filename, lineno=lineno, xform=xform) > > - File "D:\Python34\lib\site-packages\genshi\template\eval.py", line > *463*, in _compile > > new_source = ASTCodeGenerator(tree).code > > - File "D:\Python34\lib\site-packages\genshi\template\astutil.py", > line *43*, in __init__ > > self.visit(tree) > > - File "D:\Python34\lib\site-packages\genshi\template\astutil.py", > line *91*, in visit > > ret = visitor(node) > > - File "D:\Python34\lib\site-packages\genshi\template\astutil.py", > line *104*, in visit_Expression > > return self.visit(node.body) > > - File "D:\Python34\lib\site-packages\genshi\template\astutil.py", > line *90*, in visit > > raise Exception('Unhandled node type %r' % type(node)) > > > Exception: Unhandled node type <class '_ast.NameConstant'> > > The debugger caught an exception in your WSGI application. You can now > look at the traceback which led to the error. > > To switch between the interactive traceback and the plaintext one, you can > click on the "Traceback" headline. From the text traceback you can also > create a paste of it. For code execution mouse-over the frame you want to > debug and click on the console icon on the right side. > > You can execute arbitrary Python code in the stack frames and there are > some extra helpers available for introspection: > > - dump() shows all variables in the frame > - dump(obj) dumps all that's known about the object > - ctx the context of the failed request > > *Backlash*, using the Werkzeug Debugger. > > > -- > You received this message because you are subscribed to the Google Groups > "TurboGears" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/turbogears. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "TurboGears" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/turbogears. For more options, visit https://groups.google.com/d/optout.
