GUI for controlling Arduino LED & lCD

poc-gui.py

import tkinter
import time
import serial

ser = serial.Serial ('/dev/ttyUSB0',9600) #Used for Pro Mini

class gui(tkinter.Tk):
        def __init__(self,parent):
                tkinter.Tk.__init__(self,parent)
                self.parent = parent
                #ser = serial.Serial ('/dev/ttyACM0',9600)
                self.initialize()
                
        def initialize(self):
                self.grid()

                #self.entry = Tkinter.Entry(self)
                #self.entry.grid(column=0, row=0, sticky='EW')
                
                Label = tkinter.Label(self, text='.          .')
                Label.grid(column=1, row=0)

                button = tkinter.Button(self, text="Turn LED on!",
                                        command=self.OnButtonClick)
                button.grid(column=0, row=1)
                
                button = tkinter.Button(self, text="Turn LED off!",
                                        command=self.OffButtonClick)
                button.grid(column=2, row=1)
                
                button = tkinter.Button(self, text="Send booted message",
                                        command=self.BootedButton)
                button.grid(column=3, row=1)


        def OnButtonClick(self):
                print("You clicked the ON button!")
                ser.write("Y")
                Label = tkinter.Label(self, text='LED ON')
                Label.grid(column=1, row=0)
        def OffButtonClick(self):
                print("You clicked the OFF button!")
                ser.write("N")
                Label = tkinter.Label(self, text='LED OFF')
                Label.grid(column=1, row=0)
        def BootedButton(self):
                print("You clicked the booted button")
                ser.write("B")
                Label = tkinter.Label(self, text='Sent Booted msg')
                Label.grid(column=1, row=0)
                
if __name__ == "__main__":
        app = gui(None)
        app.title('Turn LED On & Off')
        app.mainloop()