test_builder_registry.py 文件源码

def test_lookup_by_markup_type(self):
        if LXML_PRESENT:
            self.assertEqual(registry.lookup('html'), LXMLTreeBuilder)
            self.assertEqual(registry.lookup('xml'), LXMLTreeBuilderForXML)
        else:
            self.assertEqual(registry.lookup('xml'), None)
            if HTML5LIB_PRESENT:
                self.assertEqual(registry.lookup('html'), HTML5TreeBuilder)
            else:
                self.assertEqual(registry.lookup('html'), HTMLParserTreeBuilder)