# Tk_basic_keypress.py

# Tk_basic_keypress.py

from Tkinter import *
from math import *
import time

root = Tk()
canv = Canvas(root, height = 500, width = 500, bg = "grey")
canv.pack()

label = Label(canv, text="last key pressed:  ...", width=20)
label.pack(fill="both", padx=100, pady=100)

# give keyboard focus to the label by default, and whenever
# the user clicks on it
label.focus_set()
label.bind("<1>", lambda event: label.focus_set())

def on_wasd(event):
    label.configure(text="last key pressed: " + event.keysym)

for z in 'w a s d Up Down Left Right'.split():
    label.bind("<"+z+">", on_wasd)

root.mainloop()