Sorry if this has been asked and answered. I did a search but came up empty.
Wailord's answer worked for me but it always opened the window and then moved it. So there is a brief moment where it blocks my editor.
Chrome has a command-line switch for window position
--window-position=x,y
https://peter.sh/experiments/chromium-command-line-switches/#window-position
from selenium import webdriver
options = webdriver.ChromeOptions()
options.add_argument('window-position=2000,0') # opens at x=2000,y=0 from the start
driver = webdriver.Chrome(options=options)