std.py 文件源码

def handle_signature(self, sig, signode):
        """Transform an option description into RST nodes."""
        count = 0
        firstname = ''
        for potential_option in sig.split(', '):
            potential_option = potential_option.strip()
            m = option_desc_re.match(potential_option)
            if not m:
                self.env.warn(
                    self.env.docname,
                    'Malformed option description %r, should '
                    'look like "opt", "-opt args", "--opt args", '
                    '"/opt args" or "+opt args"' % potential_option,
                    self.lineno)
                continue
            optname, args = m.groups()
            if count:
                signode += addnodes.desc_addname(', ', ', ')
            signode += addnodes.desc_name(optname, optname)
            signode += addnodes.desc_addname(args, args)
            if not count:
                firstname = optname
                signode['allnames'] = [optname]
            else:
                signode['allnames'].append(optname)
            count += 1
        if not firstname:
            raise ValueError
        return firstname