doctestcompare.py 文件源码

def check_output(self, want, got, optionflags):
        alt_self = getattr(self, '_temp_override_self', None)
        if alt_self is not None:
            super_method = self._temp_call_super_check_output
            self = alt_self
        else:
            super_method = OutputChecker.check_output
        parser = self.get_parser(want, got, optionflags)
        if not parser:
            return super_method(
                self, want, got, optionflags)
        try:
            want_doc = parser(want)
        except etree.XMLSyntaxError:
            return False
        try:
            got_doc = parser(got)
        except etree.XMLSyntaxError:
            return False
        return self.compare_docs(want_doc, got_doc)