code: def relaxNGNewParserCtxt(URL):
      
      ret = libxml2mod.xmlRelaxNGNewParserCtxt(URL)
      if ret is None:raise parserError('xmlRelaxNGNewParserCtxt() failed')
      return relaxNgParserCtxt(_obj=ret)
docs: Create an XML RelaxNGs parse context for that file/resource
         expected to contain an XML RelaxNGs file.