[3.11] gh-114737: Revert change to ElementTree.iterparse "root" attribute (GH-114755) (GH-114799)

miss-islington · colesbury · web-flow · commit 3982049a3054 · 2024-01-31T12:03:08.000Z
Prior to gh-114269, the iterator returned by ElementTree.iterparse was initialized with the root attribute as None. This restores the previous behavior. (cherry picked from commit 66f95ea) Co-authored-by: Sam Gross <colesbury@gmail.com>
diff --git a/Lib/test/test_xml_etree.py b/Lib/test/test_xml_etree.py
@@ -536,7 +536,9 @@ def test_iterparse(self):
         iterparse = ET.iterparse
 
         context = iterparse(SIMPLE_XMLFILE)
+        self.assertIsNone(context.root)
         action, elem = next(context)
+        self.assertIsNone(context.root)
         self.assertEqual((action, elem.tag), ('end', 'element'))
         self.assertEqual([(action, elem.tag) for action, elem in context], [
                 ('end', 'element'),
diff --git a/Lib/xml/etree/ElementTree.py b/Lib/xml/etree/ElementTree.py
@@ -1271,8 +1271,8 @@ def __del__(self):
                 source.close()
 
     it = IterParseIterator()
+    it.root = None
     wr = weakref.ref(it)
-    del IterParseIterator
     return it
 
 
