import time
from tkinter import*
tk=Tk()
canvas=Canvas(tk,width=400,height=200)
canvas.pack()
canvas.create_polygon(10,10,10,60,50,35)

#for x in range(0,60):
#	canvas.move(1,10,10)
#	tk.update()
#	time.sleep(0.05)

def movetriangle(event):
	canvas.move(1,5,0)

canvas.bind_all('<KeyPress-Return>',movetriangle)

tk.mainloop()