Turtle Graphics

from turtle import *
from random import *
from tkinter import *

winX = 800
winY = 600
key1 = 1
speed = 5
k = 0
rb = 0
bg = 1
x = 0
turn = 0
ps = 3

setup(winX, winY)
title("Color")
bgcolor("gray")
showturtle()
pensize(ps)
colors = ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"]
scolor = "Red"


Controls = Tk()
Controls.title("Controls")
Controls.minsize(180, 100)
w = Label(Controls, text="Arrow Keys - Move")
w.pack()
w = Label(Controls, text="U - Pen Up")
w.pack()
w = Label(Controls, text="D - Pen Down")
w.pack()
w = Label(Controls, text="Z - Move to center")
w.pack()
w = Label(Controls, text="C - Clear")
w.pack()
w = Label(Controls, text="S - Stop")
w.pack()
w = Label(Controls, text="Q - Quit")
w.pack()

def stop():
    global key1
    key1 = 1
    
def rng():
    global winX, winY
    if xcor() < (-1 * (winX / 2)) + 10:
        stop()
        setheading(0)
    if xcor() > (winX / 2) - 20:
        stop()
        setheading(180)
    if ycor() < (-1 * (winY / 2)) + 10:
        stop()
        setheading(90)
    if ycor() > (winY / 2) - 10:
        stop()
        setheading(270)

def selcol():
    global scolor, k, rb
    rb = 0
    k += 1
    if k > 5:
        k = 0
    scolor = colors[k]
    but6["text"] = "Color:", scolor

def selcol2():
    global scolor, k, rb
    rb = 0
    k -= 1
    if k > 5:
        k = 0
    scolor = colors[k]
    but6["text"] = "Color:", scolor

def rainbow():
    global rb
    if rb == 0:
        rb = 1
        but6["text"] = "Color: Rainbow"
    else:
        rb = 0
        but6["text"] = "Color:", scolor
    
    
def k1():
    global key1, speed, scolor, rb
    stop()
    key1 +=1
    while key1 % 2 == 0:
        if rb == 0:
            pencolor(scolor)
            forward(speed)
            rng()
        else:
            pencolor(choice(colors))
            forward(speed)
            rng()
            

def k2():
    stop()
    global key1, speed
    key1 += 1
    while key1 % 2 == 0:
        if rb == 0:
            pencolor(scolor)
            backward(speed)
            rng()
        else:
            pencolor(choice(colors))
            backward(speed)
            rng()
        
def k3():
    stop()
    if turn % 2 == 1:
        left(15)
    else:
        global key1
        key1 += 1
        while key1 % 2 == 0:
             left(4)

def k4():
    stop()
    if turn % 2 == 1:
        right(15)
    else:
        global key1
        key1 += 1
        while key1 % 2 == 0:
             right(4)

def k5():
    pu()
    stop()
    setpos(0,0)
    pd()

def k6():
    bye()

def k7():
    stop()

def k8():
    pu()
    clear()
    stop()
    setpos(0,0)
    pd()
    
def k9():
    pu()

def k10():
    pd()

def k11():
    global speed
    if speed < 10:
        speed += 1
    but3["text"] = "Speed:", speed

def k12():
    global speed
    if speed > 1:
        speed -= 1
    but3["text"] = "Speed:", speed

def k13():
    global speed, rb, x
    x += 1
    while x % 2 == 1 and speed == 10 and rb == 1:
        bgcolor(choice(colors))
        shape("turtle")
    bgcolor("gray")
    shape("classic")

def k14():
    global turn
    turn += 1
    if turn % 2 == 0:
        but8["text"] = "Toggled Turn"
    else:
        but8["text"] = "Untoggled Turn"

def k15():
    global ps
    ps += 1
    if ps > 15:
        ps = 15
    but11["text"] = "Size:", ps
    pensize(ps)

def k16():
    global ps
    ps -= 1
    if ps < 2:
        ps = 1
    but11["text"] = "Size:", ps
    pensize(ps)
        
    
       
but1 = Button(Controls, text="+", command=k11)
but1.pack(side="right")

but2 = Button(Controls, text="-", command=k12)
but2.pack(side="left")

but4 = Button(Controls, text=">", command=selcol)
but4.pack(side="right")

but5 = Button(Controls, text="<", command=selcol2)
but5.pack(side="left")

but3 = Button(Controls, relief=FLAT)
but3["text"] = "Speed:", speed
but3.pack(side="bottom")

but6 = Button(Controls, relief=FLAT)
but6["text"] = "Color:", scolor
but6.pack(side="bottom")

but7 = Button(Controls, text = "Rainbow", command=rainbow)
but7.pack(side="bottom")

but8 = Button(Controls, text = "Toggled Turn", command=k14)
but8.pack(side="bottom")

but10 = Button(Controls, text = "+", command=k15)
but10.pack(side="right")

but9 = Button(Controls, text = "-", command=k16)
but9.pack(side="left")

but11 = Button(Controls, relief=FLAT)
but11["text"] = "Size:", ps
but11.pack(side="bottom")



onkey(k1, "Up")
onkey(k2, "Down")
onkey(k3, "Left")
onkey(k4, "Right")
onkey(k5, "z")
onkey(k6, "q")
onkey(k7, "s")
onkey(k8, "c")
onkey(k9, "u")
onkey(k10, "d")
onkey(k11, "=")
onkey(k12, "-")
onkey(k13, "r")

listen()
mainloop()

$ python3 p.py
Traceback (most recent call last):
  File "p.py", line 259, in <module>
    onkey(k11, "=")
  File "<string>", line 1, in onkey
  File "/usr/lib/python3.2/turtle.py", line 1387, in onkey
    self._onkeyrelease(fun, key)
  File "/usr/lib/python3.2/turtle.py", line 687, in _onkeyrelease
    self.cv.bind("<KeyRelease-%s>" % key, eventfun)
  File "/usr/lib/python3.2/turtle.py", line 416, in bind
    self._canvas.bind(*args, **kwargs)
  File "/usr/lib/python3.2/tkinter/__init__.py", line 995, in bind
    return self._bind(('bind', self._w), sequence, func, add)
  File "/usr/lib/python3.2/tkinter/__init__.py", line 950, in _bind
    self.tk.call(what + (sequence, cmd))
_tkinter.TclError: bad event type or keysym "="