bpo-38870: invalid escape sequence (GH-20240)



`/home/isidentical/cpython/cpython/Lib/test/test_unparse.py:333: DeprecationWarning: invalid escape sequence \X`

Automerge-Triggered-By: @pablogsal
diff --git a/Lib/test/test_unparse.py b/Lib/test/test_unparse.py
index bb725ce..532aa3a 100644
--- a/Lib/test/test_unparse.py
+++ b/Lib/test/test_unparse.py
@@ -330,7 +330,7 @@
             '\r\\r\t\\t\n\\n',
             '""">>> content = \"\"\"blabla\"\"\" <<<"""',
             r'foo\n\x00',
-            '🐍⛎𩸽üéş^\X\BB\N{LONG RIGHTWARDS SQUIGGLE ARROW}'
+            '🐍⛎𩸽üéş^\N{LONG RIGHTWARDS SQUIGGLE ARROW}'
 
         )
         for docstring in docstrings: