only reset non-empty ratings

app.ipynb

@@ -207,15 +207,16 @@
     "        except:\n",
     "            gr.Warning(f'Could not save the task demo_task_{task_id} to the spreadsheet :(')\n",
     "\n",
-    "    def reset_gsheet(self, id):\n",
+    "    def reset_gsheet(self, task_id):\n",
     "        \"\"\"Reset the task ratings in google spreadsheet.\"\"\"\n",
     "        try:\n",
     "            # configure gsheet credentials\n",
     "            gc = gspread.service_account('./gsheet_service_account.json')\n",
     "            sheet_id = '1D2sfE9YXKtd7cKlgalo5UnuNKC-GhxlGqHVYUlkQlCY'\n",
     "            sh = gc.open_by_key(sheet_id).worksheet('demo-app')\n",
-    "            # update task ratings in the worksheet\n",
-    "            sh.batch_clear([f'C{3+int(id)}:J{3+int(id)}'])\n",
+    "            # update task ratings in the worksheet if there are any (clearing empty values removes formatting)\n",
+    "            if sh.get(f'C{3+int(task_id)}:J{3+int(task_id)}')[0]:\n",
+    "                sh.batch_clear([f'C{3+int(task_id)}:J{3+int(task_id)}'])\n",
     "        except:\n",
     "            gr.Warning(f'Could not reset the task demo_task_{task_id} in the spreadsheet :(')\n",
     "\n",