repr.py 文件源码

def __call__(self, topic=None):
        if topic is None:
            sys.stdout._write('<span class=help>%s</span>' % repr(self))
            return
        import pydoc
        pydoc.help(topic)
        rv = sys.stdout.reset()
        if isinstance(rv, bytes):
            rv = rv.decode('utf-8', 'ignore')
        paragraphs = _paragraph_re.split(rv)
        if len(paragraphs) > 1:
            title = paragraphs[0]
            text = '\n\n'.join(paragraphs[1:])
        else:  # pragma: no cover
            title = 'Help'
            text = paragraphs[0]
        sys.stdout._write(HELP_HTML % {'title': title, 'text': text})