Show lines, using Tkinter in python, one by one without user intervention

Question

from tkinter import Tk,Text,END
import serial
import time

class P:
    def __init__(self, window):
        
        self.window=window
        self.window.title("Multiple lines")

        #Adding text box
        self.screen=Text(self.window, state="disabled", width=40, height=15, background="white", foreground="black", font=("Helvetica",10))

        #Putting the screen in the window
        self.screen.grid(row=0, column=0, columnspan=4, padx=5, pady=5)
        
    def conect(self, port):
        conectionDone=False
        try:
            arduino = serial.Serial(port, 9600)
            conectionDone=True
        except:
            self.showInScreen("Not Arduino in port: ")
            self.showInScreen(port)
            self.showInScreen("\n")
        return conectionDone
  
    def showInScreen(self, valor):
        self.screen.configure(state="normal")
        self.screen.insert(END, valor)
        self.screen.configure(state="disabled")
        return

if __name__ == "__main__":
    window_main=Tk()
    conection=P(window_main)
    ports=['COM1','COM2','COM3','COM4','COM5','COM6','COM7','COM8','COM9','COM10','COM11','COM12','COM13','COM14']
    portDefined=False
    index=-1
    while not(portDefined):
        index+=1
        if index<14:
            portDefined=conection.conect(ports[index])
            time.sleep(0.2)
        else:
            conection.showInScreen("Conection Failed")
            break
    if portDefined:        
        conection.showInScreen("Conection Established in port: ")
        conection.showInScreen(ports[index])
    window_main.mainloop()

the time.sleep instruction is only to be sure the window appear before all its done

Hello, Im trying to make a program, that show in a window the attempts to stablish a connection with a serial port. Im using TKinter in python the problem is that all the messages appear at the end of all the attempts happend but i want to show the message in each attempts.

Its my first time with Tkinter, im using python 3.11

Your GUI will not be updated till the while loop finishes. You should use something like a coroutine, tkinter offers `widget.after(ms, func, *args)` for that — Thingamabobs, Mar 05 '23 at 13:46
ok. Where can I learn how to use it? I think I need the anser to How to substitute loops in Tkinter? — Santiago Vigo, Mar 05 '23 at 14:19
An answer of mine that shows you how to use it, can be found [here](https://stackoverflow.com/a/63118515/13629335) or [here](https://stackoverflow.com/a/74218331/13629335) — Thingamabobs, Mar 05 '23 at 15:22

Show lines, using Tkinter in python, one by one without user intervention

0 Answers0