Many of your method-level comments refer to 'webob.Request'. This should actually be 'wsgi.Request'.
155: The _builder_dispatch dict can probably go away now. _get_builder takes care of it.
209: Looks like you called get_builder and build incorrectly: "return self.get_builder().build(req, image, True)" should be "return self.get_builder(req).build(image, True)"
Many of your method-level comments refer to 'webob.Request'. This should actually be 'wsgi.Request'.
155: The _builder_dispatch dict can probably go away now. _get_builder takes care of it.
209: Looks like you called get_builder and build incorrectly: "return self.get_ builder( ).build( req, image, True)" should be "return self.get_ builder( req).build( image, True)"