def rename(self, new_name, session=None, **kwargs):
        """Rename this collection.

        If operating in auth mode, client must be authorized as an
        admin to perform this operation. Raises :class:`TypeError` if
        `new_name` is not an instance of :class:`basestring`
        (:class:`str` in python 3). Raises :class:`~pymongo.errors.InvalidName`
        if `new_name` is not a valid collection name.

        :Parameters:
          - `new_name`: new name for this collection
          - `session` (optional): a
            :class:`~pymongo.client_session.ClientSession`.
          - `**kwargs` (optional): additional arguments to the rename command
            may be passed as keyword arguments to this helper method
            (i.e. ``dropTarget=True``)

        .. note:: The :attr:`~pymongo.collection.Collection.write_concern` of
           this collection is automatically applied to this operation when using
           MongoDB >= 3.4.

        .. versionchanged:: 3.6
           Added ``session`` parameter.

        .. versionchanged:: 3.4
           Apply this collection's write concern automatically to this operation
           when connected to MongoDB >= 3.4.

        """
        if not isinstance(new_name, string_type):
            raise TypeError("new_name must be an "
                            "instance of %s" % (string_type.__name__,))

        if not new_name or ".." in new_name:
            raise InvalidName("collection names cannot be empty")
        if new_name[0] == "." or new_name[-1] == ".":
            raise InvalidName("collecion names must not start or end with '.'")
        if "$" in new_name and not new_name.startswith("oplog.$main"):
            raise InvalidName("collection names must not contain '$'")

        new_name = "%s.%s" % (self.__database.name, new_name)
        cmd = SON([("renameCollection", self.__full_name), ("to", new_name)])
        cmd.update(kwargs)
        write_concern = self._write_concern_for_cmd(cmd, session)

        with self._socket_for_writes(session) as sock_info:
            with self.__database.client._tmp_session(session) as s:
                return sock_info.command(
                    'admin', cmd,
                    write_concern=write_concern,
                    parse_write_concern_error=True,
                    session=s, client=self.__database.client)
Rename this collection.

        If operating in auth mode, client must be authorized as an
        admin to perform this operation. Raises :class:`TypeError` if
        `new_name` is not an instance of :class:`basestring`
        (:class:`str` in python 3). Raises :class:`~pymongo.errors.InvalidName`
        if `new_name` is not a valid collection name.

        :Parameters:
          - `new_name`: new name for this collection
          - `session` (optional): a
            :class:`~pymongo.client_session.ClientSession`.
          - `**kwargs` (optional): additional arguments to the rename command
            may be passed as keyword arguments to this helper method
            (i.e. ``dropTarget=True``)

        .. note:: The :attr:`~pymongo.collection.Collection.write_concern` of
           this collection is automatically applied to this operation when using
           MongoDB >= 3.4.

        .. versionchanged:: 3.6
           Added ``session`` parameter.

        .. versionchanged:: 3.4
           Apply this collection's write concern automatically to this operation
           when connected to MongoDB >= 3.4.

        
stackoverflow/venv/lib/python3.6/site-packages/pymongo/collection.py