diff -r c69be794a9c6 Lib/turtle.py
--- a/Lib/turtle.py	Wed Sep 03 19:54:06 2014 -0400
+++ b/Lib/turtle.py	Thu Sep 04 11:04:03 2014 +0300
@@ -1287,7 +1287,7 @@
     def _incrementudc(self):
         """Increment update counter."""
         if not TurtleScreen._RUNNING:
-            TurtleScreen._RUNNNING = True
+            TurtleScreen._RUNNING = True
             raise Terminator
         if self._tracing > 0:
             self._updatecounter += 1
@@ -3753,7 +3753,7 @@
             Turtle._screen = None
             _Screen._root = None
             _Screen._canvas = None
-        TurtleScreen._RUNNING = True
+        TurtleScreen._RUNNING = False
         root.destroy()
 
     def bye(self):
@@ -3794,7 +3794,6 @@
         except AttributeError:
             exit(0)
 
-
 class Turtle(RawTurtle):
     """RawTurtle auto-creating (scrolled) canvas.
 
@@ -3817,18 +3816,6 @@
 
 Pen = Turtle
 
-def _getpen():
-    """Create the 'anonymous' turtle if not already present."""
-    if Turtle._pen is None:
-        Turtle._pen = Turtle()
-    return Turtle._pen
-
-def _getscreen():
-    """Create a TurtleScreen if not already present."""
-    if Turtle._screen is None:
-        Turtle._screen = Screen()
-    return Turtle._screen
-
 def write_docstringdict(filename="turtle_docstringdict"):
     """Create and write docstring-dictionary to file.
 
@@ -3951,14 +3938,29 @@
 ## as functions. So we can enhance, change, add, delete methods to these
 ## classes and do not need to change anything here.
 
+__func_body = """\
+def {name}{paramslist}:
+    if {obj} is None:
+        if not TurtleScreen._RUNNING:
+            TurtleScreen._RUNNING = True
+            raise Terminator
+        {obj} = {init}
+    try:
+        return {obj}.{name}{argslist}
+    except TK.TclError:
+        if not TurtleScreen._RUNNING:
+            TurtleScreen._RUNNING = True
+            raise Terminator
+        raise
+"""
 
 for methodname in _tg_screen_functions:
     pl1, pl2 = getmethparlist(eval('_Screen.' + methodname))
     if pl1 == "":
         print(">>>>>>", pl1, pl2)
         continue
-    defstr = ("def %(key)s%(pl1)s: return _getscreen().%(key)s%(pl2)s" %
-                                   {'key':methodname, 'pl1':pl1, 'pl2':pl2})
+    defstr = __func_body.format(obj='Turtle._screen', init='Screen()',
+                                name=methodname, paramslist=pl1, argslist=pl2)
     exec(defstr)
     eval(methodname).__doc__ = _screen_docrevise(eval('_Screen.'+methodname).__doc__)
 
@@ -3967,8 +3969,8 @@
     if pl1 == "":
         print(">>>>>>", pl1, pl2)
         continue
-    defstr = ("def %(key)s%(pl1)s: return _getpen().%(key)s%(pl2)s" %
-                                   {'key':methodname, 'pl1':pl1, 'pl2':pl2})
+    defstr = __func_body.format(obj='Turtle._pen', init='Turtle()',
+                                name=methodname, paramslist=pl1, argslist=pl2)
     exec(defstr)
     eval(methodname).__doc__ = _turtle_docrevise(eval('Turtle.'+methodname).__doc__)
 
diff -r c69be794a9c6 Lib/turtledemo/__main__.py
--- a/Lib/turtledemo/__main__.py	Wed Sep 03 19:54:06 2014 -0400
+++ b/Lib/turtledemo/__main__.py	Thu Sep 04 11:04:03 2014 +0300
@@ -342,6 +342,8 @@
             else:
                 self.state = DONE
         except turtle.Terminator:
+            if self.root is None:
+                return
             self.state = DONE
             result = "stopped!"
         if self.state == DONE:
@@ -367,7 +369,9 @@
         turtle.TurtleScreen._RUNNING = False
 
     def _destroy(self):
+        turtle.TurtleScreen._RUNNING = False
         self.root.destroy()
+        self.root = None
 
 
 def main():