On Wed, 10 Jan 2007, Michele Simionato wrote: >> On Wed, Jan 03, 2007 at 04:37:44AM -0800, Sohrab Sepehri wrote: [...] >> -> TypeError: Error when calling the metaclass bases >> -> Cannot create a consistent method resolution >> -> order (MRO) for bases response_seek_wrapper, httperror_seek_wrapper > > This is a rare error due to multiple inheritance conflicts (see > http://www.python.org/download/releases/2.3/mro). It happens at class > definition time. Where is the class httperror_seek_wrapper? Could you > provide module and line number? Which version of twill are you using? > I don't find it in my twill installation.
It's in mechanize/_response.py, line 417 in SVN HEAD (of mechanize). Looks like twill 0.8.5 contains an older mechanize that does not contain that hack, so I guess the OP must have the darcs version (which I don't have). I am indeed playing some highly unpleasant tricks here. Here's why: http://article.gmane.org/gmane.comp.python.wwwsearch.general/783 http://article.gmane.org/gmane.comp.python.wwwsearch.general/784 An httperror_seek_wrapper class should be created every time you get a non-200 response, so for example opening a URL that does not exist should trigger this (unless twill does something funny here to suppress the error). I don't seen the reported issue when I try this, though: >>> br = mechanize.Browser() >>> br.open("http://wwwsearch.sf.net/doesnotexist";) Traceback (most recent call last): File "<stdin>", line 1, in ? File "/home/john/lib/python/mechanize/_mechanize.py", line 156, in open return self._mech_open(url, data) File "/home/john/lib/python/mechanize/_mechanize.py", line 207, in _mech_open raise response mechanize._response.httperror_seek_wrapper: HTTP Error 404: Not Found >>> Do you see what the problem is, Michele? If you can suggest a way out of this mess without changing public interfaces, that would be even better :-) John _______________________________________________ twill mailing list [email protected] http://lists.idyll.org/listinfo/twill
