Update app.py

app.py

@@ -17,9 +17,10 @@ def get_data_preview(file):
 
 def label_data(ranges):
     global global_data
-    for start, end, label in ranges:
+    for start, end, label in ranges.values:
         global_data.loc[start:end, 'label'] = label
-    return global_data.head()
+    return global_data
+
 
 def preprocess_data(data):
     data.drop(columns=data.columns[0], axis=1, inplace=True)