This warning from google has me worried:
"Warning: This notebook was not authored by Google.
This notebook was authored by
jeongshi514@gmail.com. It may request access to your data stored with Google, or read data and credentials from other sessions. Please review the source code before executing this notebook. Please contact the creator of this notebook at
jeongshi514@gmail.com with any additional questions."
Version 2 on colab didn't have this warning.