When trying to use the RawPen-class of turtle.py,
the following error occurs:

Python 2.2.1c2 (#33, Mar 26 2002, 13:04:18) [MSC 32 bit
(Intel)] on win32
Type "copyright", "credits" or "license" for more
information.
IDLE 0.8 -- press F1 for help
>>> from Tkinter import *
>>> import turtle
>>> root = Tk()
>>> c = Canvas(root)
>>> c.pack()
>>> t = turtle.RawPen(c)
Traceback (most recent call last):
  File "<pyshell#5>", line 1, in ?
    t = turtle.RawPen(c)
  File "C:\Python221c\lib\lib-tk\turtle.py", line 16,
in __init__
    self.reset()
  File "C:\Python221c\lib\lib-tk\turtle.py", line 42,
in reset
    self.clear()
  File "C:\Python221c\lib\lib-tk\turtle.py", line 53,
in clear
    self._draw_turtle()
  File "C:\Python221c\lib\lib-tk\turtle.py", line 262,
in _draw_turtle
    self._arrow = _canvas.create_line(x-dx,y+dy,x,y,
AttributeError: 'NoneType' object has no attribute
'create_line'
>>> 

This can be fixed - I suppose - by correcting  line 262:

    self._arrow = self._canvas.create_line(x-dx, ...etc.

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This was fixed through patch #536117.

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Cannot find patch #536117
When was it fixed?

In python2.2.1c2 it's definitely not fixed

Gregor Lingl

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You can find the patch at http://python.org/sf/536117
As you can see from the patch discussion, it was committed
as turtle.py 1.6, so the fix will be released with Python 2.3.

The patch might be considered for inclusion in Python 2.2.2
as well.