Hi,
I haven’t worked with the Resolver class, but if you call the method via the class (and not by self.), shouldn’t the first parameter be self?
> class simple_string_resolver(etree.Resolver):
>
> def resolve(self, url, id, context):
...
> # pass this byte object to the resolve_string method
> return etree.Resolver.resolve_string(content, id, context, base_url=url)
according to
http://lxml.de/1.3/resolvers.html#resolvers
self.resolve_string(
or
etree.Resolver.resolve_string(self,
should work. (and do the same, as long as you do not overwrite resolve_string in your simple_string_resolver class.).
Also, you may want to follow PEP 8
https://www.python.org/dev/peps/pep-0008/ when naming things (like SimpleStringResolver).
best,
jens