[3.14] Docs: simplify `turtle` tutorial's star example code (GH-155232) (#155563)

https://github.com/python/cpython/commit/3efd623c178fcede8ad67a9a63e5af3b425527cd
commit: 3efd623c178fcede8ad67a9a63e5af3b425527cd
branch: 3.14
author: Miss Islington (bot) <[email protected]>
committer: StanFromIreland <[email protected]>
date: 2026-08-11T14:50:08Z
summary:

[3.14] Docs: simplify `turtle` tutorial's star example code (GH-155232) (#155563)

(cherry picked from commit 7c072c1fcc3c04535dde873a7709781be2794583)

Co-authored-by: Maciej Olko <[email protected]>
Co-authored-by: Stan Ulbrych <[email protected]>

files:
M Doc/library/turtle.rst

diff --git a/Doc/library/turtle.rst b/Doc/library/turtle.rst
index 6b76648e7e25f6c..c694077b22f51f5 100644
--- a/Doc/library/turtle.rst
+++ b/Doc/library/turtle.rst
@@ -166,14 +166,16 @@ filling can be turned on and off::
 
 Next we'll create a loop::
 
+    start = pos()
+
     while True:
         forward(200)
         left(170)
-        if abs(pos()) < 1:
+        if distance(start) < 1:
             break
 
-``abs(pos()) < 1`` is a good way to know when the turtle is back at its
-home position.
+``distance(start) < 1`` is a good way to know when the turtle is back at its
+start position.
 
 Finally, complete the filling::
 

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