untangle.py 文件源码

def parse(filename):
    """
    Interprets the given string as a filename, URL or XML data string,
    parses it and returns a Python object which represents the given
    document.

    Raises ``ValueError`` if the argument is None / empty string.

    Raises ``xml.sax.SAXParseException`` if something goes wrong
    during parsing.s
    """
    if filename is None or filename.strip() == '':
        raise ValueError('parse() takes a filename, URL or XML string')
    parser = make_parser()
    sax_handler = Handler()
    parser.setContentHandler(sax_handler)
    if os.path.exists(filename) or is_url(filename):
        parser.parse(filename)
    else:
        parser.parse(StringIO(filename))

    return sax_handler.root