From 1ffbab423cfbe4fe8744e4b98b630706412ad959 Mon Sep 17 00:00:00 2001
From: Walter Bender <walter.bender@gmail.com>
Date: Sat, 19 Mar 2011 15:31:51 +0000
Subject: looking up index instead of hardwiring it

---
diff --git a/TurtleArt/tapalette.py b/TurtleArt/tapalette.py
index 43a5d25..e34df21 100644
--- a/TurtleArt/tapalette.py
+++ b/TurtleArt/tapalette.py
@@ -165,6 +165,14 @@ def make_palette(palette_name, colors=None, help_string=None):
     return palette
 
 
+def palette_name_to_index(palette_name):
+    ''' Find the index associated with palette_name. '''
+    if palette_name in palette_names:
+        return palette_names.index(palette_name)
+    else:
+        return None
+
+
 class Block():
     """ a class for defining new block primitives """
 
diff --git a/pysamples/uturn.py b/pysamples/uturn.py
index 40d0a00..cd1b18e 100644
--- a/pysamples/uturn.py
+++ b/pysamples/uturn.py
@@ -24,19 +24,21 @@
 
 def myblock(lc, arg):
     ''' Add a uturn block to the 'turtle' palette '''
-    from TurtleArt.tapalette import make_palette
+    from TurtleArt.tapalette import make_palette, palette_name_to_index
     from TurtleArt.talogo import primitive_dictionary
     from gettext import gettext as _
-    palette = make_palette('turtle')
 
+    palette = make_palette('turtle')
     palette.add_block('uturn',
                       style='basic-style-extended-vertical',
                       label=_('uturn'),
                       prim_name='uturn',
                       help_string=_('make a uturn'))
+
     lc.tw.lc.def_prim('uturn', 0,
                      lambda self: primitive_dictionary['set'](
             'heading', lc.tw.canvas.seth,
             lc.tw.canvas.heading + 180))
 
-    lc.tw.show_toolbar_palette(0, regenerate=True)
+    lc.tw.show_toolbar_palette(palette_name_to_index('turtle'),
+                               regenerate=True)
--
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