PolyStocks is a custom module to watch stock prices for Polybar.
$ pip3 install yahoo_fin
$ cp polystocks.py ~/.config/polybar/scripts/
$ chmod +x ~/.config/polybar/scripts/polystocks.py
[module/polystocks]
type = custom/script
exec = ~/.config/polybar/scripts/polystocks.py
tail = true
label = %output%