diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 6b617cc..7408a70 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -214,7 +214,7 @@
   <component name="PropertiesComponent">
     <property name="WebServerToolWindowFactoryState" value="false" />
     <property name="aspect.path.notification.shown" value="true" />
-    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1588325900732" />
+    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1588326091384" />
     <property name="go.gopath.indexing.explicitly.defined" value="true" />
     <property name="nodejs_interpreter_path.stuck_in_default_project" value="undefined stuck path" />
     <property name="nodejs_npm_path_reset_for_default_project" value="true" />
diff --git a/serve.py b/serve.py
index 69caa3d..18f6d7b 100644
--- a/serve.py
+++ b/serve.py
@@ -212,9 +212,7 @@ class MyHandler(BaseHTTPRequestHandler):
 				with open(config.train_data_path, 'r') as f:
 					q = deque(f, config.time_step - 1)
 					df = pd.read_csv(StringIO(''.join(q)), header=None)
-					print(df)
-					df.append(data, ignore_index=True)
-					print(df)
+					df = df.append(data, ignore_index=True)
 					df.to_csv('./data/test_data.csv', index=False)
 
 				np.random.seed(config.random_seed)