[issue21812] turtle.shapetransform doesn't transform the turtle on the first call

[Raymond Hettinger]

Raymond Hettinger added the comment:

The looks good.  Please revise the patch to isolate the actual change in logic and not confound it with PEP-8 nits which make the patch harder to review.

Also, please be careful with breaking lines.  In the following part of the diff, the space after "matrix:" is lost (Hazards like this are one reason to avoid cosmetic changes).

-            raise TurtleGraphicsError("Bad shape transform matrix: must not be singular")
+            raise TurtleGraphicsError(("Bad shape transform matrix:"
+                                       "must not be singular")

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assignee:  -> rhettinger
nosy: +rhettinger

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21812>
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