Repaired logging filename

examples/A3C-Gym/train-atari.py

@@ -152,7 +152,7 @@ class MySimulatorMaster(SimulatorMaster, Callback):
         self.queue = queue.Queue(maxsize=BATCH_SIZE * 8 * 2)
         self._gpus = gpus
         self.reward = 0
-        self.fd = open('/kaggle/working', 'w')
+        self.fd = open('/kaggle/working/data_file', 'w')
 
     def __del__(self):
         self.f.close()