from tkinter import *
import tkinter.font
import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BOARD)
GPIO.setup(37, GPIO.OUT)
GPIO.output(37, GPIO.LOW)
GPIO.setup(38, GPIO.OUT)
GPIO.output(38, GPIO.LOW)
GPIO.setup(36, GPIO.OUT)
GPIO.output(36, GPIO.LOW)
win = Tk()
myFont = tkinter.font.Font(family = 'Helvetica', size = 26, weight = 'bold')
def ledON(self):
  print("LED button pressed")
  GPIO.output(37,GPIO.HIGH)
  ledButton["text"] = "LED OFF"
def ledON3(self):
        print("LED button nopressed")
        GPIO.output(37,GPIO.LOW)
        ledButton["text"] = "LED ON"
def ledON1(self):
        print("LED button1 pressed")
        GPIO.output(38,GPIO.HIGH)
        ledButton1["text"] = "LED1 OFF"
def ledON4(self):
        print("LED button1 nopressed")
        GPIO.output(38,GPIO.LOW)
        ledButton1["text"] = "LED1 ON"
def ledON2(self):
        print("LED button2 pressed")
        GPIO.output(36,GPIO.HIGH)
        ledButton2["text"] = "LED2 OFF"
def ledON5(self):
        print("LED button2 nopressed")
        GPIO.output(36,GPIO.LOW)
        ledButton2["text"] = "LED2 ON"
def exitProgram(self):
        print("Exit Button pressed")
        GPIO.cleanup()
        win.quit()	
win.title("First GUI")
win.geometry('800x480')
exitButton  = Button(win, text = "Exit", font = myFont, command = exitProgram, height =2 , width = 6) 
exitButton.pack(side = BOTTOM)
ledButton = Button(win, text = "LED ON", font = myFont, command = ledON, height = 2, width = 6 )
ledButton.pack( side = RIGHT , padx = 10 , pady = 10 , ipadx = 10 , ipady = 10 )
ledButton1 = Button(win, text = "LED ON1", font = myFont, command = ledON1, height = 2, width = 6 )
ledButton1.pack( side = LEFT, padx = 10 , pady = 10 , ipadx = 10 , ipady = 10 )
ledButton2 = Button(win, text = "LED ON2", font = myFont, command = ledON2, height = 2, width = 6 )
ledButton2.pack()
win.bind('i', ledON2 )
win.bind('j', ledON1 )
win.bind('l', ledON )
win.bind('k', exitProgram )
win.bind('<KeyRelease-l>', ledON3 )
win.bind('<KeyRelease-j>', ledON4 )
win.bind('<KeyRelease-i>', ledON5 )
mainloop()

 from tkinter import *
root = Tk()
root.geometry('600x600+0+0') 
canv = Canvas(bg='green')
canv.pack(fill=BOTH,expand=1)
rect = canv.create_rectangle(100,100,200,200,fill='red') 
     
def keypress(event):
    print(event.keysym)
    if event.keysym == 'Right':
        canv.move(rect,10,0)
    elif event.keysym == 'Left':
        canv.move(rect,-10,0)
    elif event.keysym == 'Up':
        canv.move(rect,0,-10)
    elif event.keysym == 'Down':
        canv.move(rect,0,10)
    else: return
    root.update_idletasks()
     
root.bind('<Key>',keypress) 
root.mainloop()

 from tkinter import *
def keyup(e):
    print ('up', e.char)
def keydown(e):
    print ('down', e.char)
root = Tk()
frame = Frame(root, width=100, height=100)
frame.bind("<KeyPress-a>", keydown)
frame.bind("<KeyRelease-a>", keyup)
frame.pack()
frame.focus_set()
root.mainloop()

 from tkinter import *
btn_pressed = False
def keyup(e):
    global btn_pressed
    if btn_pressed:
        print ('up', e.char)
        btn_pressed = False
def keydown(e):
    global btn_pressed
    if not btn_pressed:
        print ('down', e.char)
        btn_pressed = True
root = Tk()
frame = Frame(root, width=100, height=100)
frame.bind("<KeyPress-a>", keydown)
frame.bind("<KeyRelease-a>", keyup)
frame.pack()
frame.focus_set()
root.mainloop()