Update app.py

app.py

@@ -65,9 +65,11 @@ class DataList:
         df = df.loc[df.Type.isin(set(filter_names))]
         temp = []
         for x in filter_names2:
-            temp += df[df.name_lowercase.str.contains(x.lower())]
+            temp.append(df[df.name_lowercase.str.contains(x.lower())])
 
-        return temp
+        df= pd.Dataframe(temp)
+
+        return df
 
     @staticmethod
     def to_html(df: pd.DataFrame, table_header: str) -> str: