code: def createFileParserCtxt(filename):
      
      ret = libxml2mod.xmlCreateFileParserCtxt(filename)
      if ret is None:raise parserError('xmlCreateFileParserCtxt() failed')
      return parserCtxt(_obj=ret)
docs: Create a parser context for a file content. Automatic
        support for ZLIB/Compress compressed document is provided
         by default if found at compile-time.