Entry Widget issue

[PA3040]

Hi
Thanks for the reply

This is the working code

import serial
from tkinter import *
from time import sleep

   
values = []
root = Tk()
root.geometry('600x200')

cnt=0
var = StringVar()
serialArduino = serial.Serial('COM3',baudrate = 9600, timeout = 1)
root.title("D Cube Serial Read")
e = Entry(root,width = 35, textvariable = var ,borderwidth = 5)
e.grid(row = 0, column = 0, columnspan = 3,padx = 10,pady = 10)
while True:
    valueRead = serialArduino.readline()
    print(valueRead)
    var.set(valueRead)
    #var.set('My Var')
root.mainloop()

You can see the root.mainloop() does not inside the while loop so then the result is showing in the python shell and it does not load the widget and GUI .only reading showing the python shell

b''
b'11\r\n'
b'12\r\n'
b'13\r\n'
b'14\r\n'
b'15\r\n'
b'16\r\n'
b'17\r\n'
b'18\r\n'
b'19\r\n'

Out Put

but when i put the root.mainloop() to the inside of the while loop as showing following

while True:
    valueRead = serialArduino.readline()
    print(valueRead)
    var.set(valueRead)
    #var.set('My Var')
    root.mainloop()

Then it will load the GUI but the values read from serial port does not display on widget and in this case the value does not show python shell too

See the image

https://1drv.ms/u/s!AvrJlo2hoIofhhuaViWgHjtNjOVe

Please advice
Thanks in advanced