def list_collection_names(self, session=None, filter=None, **kwargs):
        """Get a list of all the collection names in this database.

        For example, to list all non-system collections::

            filter = {"name": {"$regex": r"^(?!system\.)"}}
            db.list_collection_names(filter=filter)

        :Parameters:
          - `session` (optional): a
            :class:`~pymongo.client_session.ClientSession`.
          - `filter` (optional):  A query document to filter the list of
            collections returned from the listCollections command.
          - `**kwargs` (optional): Optional parameters of the
            `listCollections command
            <https://docs.mongodb.com/manual/reference/command/listCollections/>`_
            can be passed as keyword arguments to this method. The supported
            options differ by server version.

        .. versionchanged:: 3.8
           Added the ``filter`` and ``**kwargs`` parameters.

        .. versionadded:: 3.6
        """
        if filter is None:
            kwargs["nameOnly"] = True
        else:
            # The enumerate collections spec states that "drivers MUST NOT set
            # nameOnly if a filter specifies any keys other than name."
            common.validate_is_mapping("filter", filter)
            kwargs["filter"] = filter
            if not filter or (len(filter) == 1 and "name" in filter):
                kwargs["nameOnly"] = True

        return [result["name"]
                for result in self.list_collections(session=session, **kwargs)]
Get a list of all the collection names in this database.

        For example, to list all non-system collections::

            filter = {"name": {"$regex": r"^(?!system\.)"}}
            db.list_collection_names(filter=filter)

        :Parameters:
          - `session` (optional): a
            :class:`~pymongo.client_session.ClientSession`.
          - `filter` (optional):  A query document to filter the list of
            collections returned from the listCollections command.
          - `**kwargs` (optional): Optional parameters of the
            `listCollections command
            <https://docs.mongodb.com/manual/reference/command/listCollections/>`_
            can be passed as keyword arguments to this method. The supported
            options differ by server version.

        .. versionchanged:: 3.8
           Added the ``filter`` and ``**kwargs`` parameters.

        .. versionadded:: 3.6
        
stackoverflow/venv/lib/python3.6/site-packages/pymongo/database.py