Update app.py

app.py

@@ -157,8 +157,12 @@ def used_gpu():
 
 def get_data():
     output = []
-    output.append({"gpus":get_gpus(), "total":{"total" : blockchain.get_total_gpu_mem(), "used":get_used_gpus(model_name)}, "chain":blockchain.chain})
+    with open('Chain_data.json') as json_file:
+        json_data = json.load(json_file)
+    output.append({"gpus":get_gpus(), "total":{"total" : blockchain.get_total_gpu_mem(), "used":get_used_gpus(model_name)}, "chain":json_data+blockchain.chain})
 
+    with open('Chain_data.json', 'w') as outfile:
+        json.dump(output['chain'], outfile)
     return output