Put data in GridFS as a new file.

        Equivalent to doing::

          try:
              f = new_file(**kwargs)
              f.write(data)
          finally:
              f.close()

        `data` can be either an instance of :class:`str` (:class:`bytes`
        in python 3) or a file-like object providing a :meth:`read` method.
        If an `encoding` keyword argument is passed, `data` can also be a
        :class:`unicode` (:class:`str` in python 3) instance, which will
        be encoded as `encoding` before being written. Any keyword arguments
        will be passed through to the created file - see
        :meth:`~gridfs.grid_file.GridIn` for possible arguments. Returns the
        ``"_id"`` of the created file.

        If the ``"_id"`` of the file is manually specified, it must
        not already exist in GridFS. Otherwise
        :class:`~gridfs.errors.FileExists` is raised.

        :Parameters:
          - `data`: data to be written as a file.
          - `**kwargs` (optional): keyword arguments for file creation

        .. versionchanged:: 3.0
           w=0 writes to GridFS are now prohibited.

def put(self, data, **kwargs):
        """Put data in GridFS as a new file.

        Equivalent to doing::

          try:
              f = new_file(**kwargs)
              f.write(data)
          finally:
              f.close()

        `data` can be either an instance of :class:`str` (:class:`bytes`
        in python 3) or a file-like object providing a :meth:`read` method.
        If an `encoding` keyword argument is passed, `data` can also be a
        :class:`unicode` (:class:`str` in python 3) instance, which will
        be encoded as `encoding` before being written. Any keyword arguments
        will be passed through to the created file - see
        :meth:`~gridfs.grid_file.GridIn` for possible arguments. Returns the
        ``"_id"`` of the created file.

        If the ``"_id"`` of the file is manually specified, it must
        not already exist in GridFS. Otherwise
        :class:`~gridfs.errors.FileExists` is raised.

        :Parameters:
          - `data`: data to be written as a file.
          - `**kwargs` (optional): keyword arguments for file creation

        .. versionchanged:: 3.0
           w=0 writes to GridFS are now prohibited.
        """
        grid_file = GridIn(self.__collection, **kwargs)
        try:
            grid_file.write(data)
        finally:
            grid_file.close()

        return grid_file._id