def get(self, file_id, callback):
"""Get a file from GridFS by ``"_id"``.
Returns an instance of :class:`~gridfs.grid_file.GridOut`,
which provides a file-like interface for reading.
:Parameters:
- `file_id`: ``"_id"`` of the file to get
.. versionadded:: 1.6
"""
GridOut.instance_for(self.__collection, callback, file_id)
def mod_callback(response):
if len(response) > 0:
GridOut.instance_for(self.__collection, callback, file_document=response[0])
else:
callback(None)
