У вашего броузера проблема в совместимости с HTML5
Good tutorial for getting json credentials (Oauth2): https://youtu.be/vISRn5qFrkM
Installing OAuth2 & gspread:
pip install oauth2client
pip install gspread
For the full script (and some extras), visit my Github:
https://github.com/codebitsyt/Google-Spreadsheets
Thanks for watching! If you have any questions, suggestions for future videos or anything at all, feel free to leave a comment below