00:00 Script demo showing number of chars entered by user in Text widget
01:44 Layout of the window with widgets
06:42 Binding key release event with triggering of updating function
07:19 my_upd() to calculate and display number of chars entered by user
10:37 using bootstyle to manage the color of the Floodgauge based on number of chars entered
14:29 Limiting the maximum number of chars in the text widget
Download the source code from here.
https://www.plus2net.com/python/tkinter-ttkbootstrap-floodgauge-counter.php