Chrome Driver Download Site:
https://chromedriver.chromium.org/

Python selenium教學:
https://medium.com/seaniap/用python控制chrome瀏覽器-selenium初體驗-732929668ce3

https://stackoverflow.com/questions/56897041/how-to-save-opened-page-as-pdf-in-selenium-python

設定Save as PDF的儲存路徑:
https://stackoverflow.com/questions/54578876/selenium-chrome-save-as-pdf-change-download-folder
(savefile.default_directory': 'path/to/dir/')