def get_standard(self):
try:<EOL><INDENT>res = urlopen(PARSELY_PAGE_SCHEMA)<EOL><DEDENT>except:<EOL><INDENT>return []<EOL><DEDENT>text = res.read()<EOL>if isinstance(text, bytes):<EOL><INDENT>text = text.decode('<STR_LIT:utf-8>')<EOL><DEDENT>tree = etree.parse(StringIO(text))<EOL>stdref = tree.xpath("<STR_LIT>")<EOL>return [a.split('<STR_LIT::>')[<NUM_LIT:1>] for a in stdref]<EOL>
get list of allowed parameters