url.py 文件源码

def join(self, path):
        """
        assumes this object is the base URL or base path.  If the path
        is relative, it should be appended to the base.  If the path
        is absolute, it should be added to the connection details of
        self.  If the path already contains connection details and the
        connection details differ from self, raise an error.
        """
        pathAsString = str(path)
        if not path or not pathAsString:
            return self
        path = URL.objectify(path)
        if (
            (path.scheme and self.scheme and path.scheme != self.scheme) or
            (path.hostname and self.hostname and
             path.hostname != self.hostname) or
            (path.port and self.port and path.port != self.port)
        ):
            raise ValueError("%s can't be joined with %s" % (self, path))

        if path.path[0] == '/':
            ret_path = uc2utf8(path.path)
        else:
            sep = "/"
            if self.path.endswith("/"):
                sep = ""
            ret_path = "%s%s%s" % (self.path, sep, uc2utf8(path.path))
        return URL(ParseResult(
            self.scheme or path.scheme, self.netloc or path.netloc, ret_path,
            path.params, path.query, path.fragment))