Showing number of chars Entered in Meter

Triggering function on adding or removal of chars inside Text widget

t1.bind("<KeyRelease>", my_upd)  # Trigger on Key release event

Function my_upd()

def my_upd(value):
    my_str = t1.get("1.0", "end-1c")  # read the string
    breaks = my_str.count("\n")  # Number of line breaks
    char_numbers = len(my_str) - breaks  # Final number of chars
    l2.config(text=str(char_numbers))  # display in Label
    m1["amountused"] = char_numbers  # connect to Meter

    if char_numbers < 50:
        m1["bootstyle"] = SUCCESS
    elif char_numbers < 75:
        m1["bootstyle"] = WARNING
    elif char_numbers < 100:
        m1["bootstyle"] = DANGER

    if char_numbers >= 100:  # to stop accepting char after limit
        t1.delete("end-2c")  # remove last char of text widget

import tkinter as tk
import ttkbootstrap as ttk
from ttkbootstrap.constants import *

# my_w = tk.Tk()
my_w = ttk.Window()
my_w.geometry("400x300")  # width x height of the window
my_w.title("www.plus2net.com")  # Adding a title

l1 = tk.Label(my_w, text="Your Data", width=10, font=20)  # added one Label
l1.grid(row=0, column=0, padx=3, pady=10, columnspan=2)

t1 = tk.Text(my_w, height=3, width=40, bg="lightgreen", font=28)  # text box
t1.grid(row=1, column=0, padx=10, columnspan=2)

l2 = tk.Label(my_w, text=0, font=22)
l2.grid(row=2, column=0, padx=5, pady=5)

m1 = ttk.Meter(
    my_w,
    amountused=0,
    metersize=130,
    meterthickness=20,
    interactive=True,
    bootstyle=SUCCESS,
)
m1.grid(row=2, column=1, padx=2, pady=5)

def my_upd(value):
    my_str = t1.get("1.0", "end-1c")  # read the string
    breaks = my_str.count("\n")  # Number of line breaks
    char_numbers = len(my_str) - breaks  # Final number of chars
    l2.config(text=str(char_numbers))  # display in Label
    m1["amountused"] = char_numbers  # connect to Meter

    if char_numbers < 50:
        m1["bootstyle"] = SUCCESS
    elif char_numbers < 75:
        m1["bootstyle"] = WARNING
    elif char_numbers < 100:
        m1["bootstyle"] = DANGER

    if char_numbers >= 100:  # to stop accepting char after limit
        t1.delete("end-2c")  # remove last char of text widget

t1.bind("<KeyRelease>", my_upd)  # Trigger on Key release event
my_w.mainloop()  # Keep the window open