

def find_frame_backward(self, grpos_range, frames=None, flag_mask=0):
    pos = self._scan_from_end(grpos_range, frames=frames, flag_mask=flag_mask)
    return defer.succeed(frames)

dataset/ETHPy150Open arkadini/twimp/twimp/server/inmemory.py IMStream.find_frame_backward/VarMisuse@42/61 `pos`->`frames`