diff --git a/Lib/test/test_minidom.py b/Lib/test/test_minidom.py index 4fa5a4e6768b25..7717a98583f741 100644 --- a/Lib/test/test_minidom.py +++ b/Lib/test/test_minidom.py @@ -9,7 +9,7 @@ import xml.dom.minidom -from xml.dom.minidom import parse, Attr, Node, Document, parseString +from xml.dom.minidom import parse, Attr, Node, Document, Element, parseString from xml.dom.minidom import getDOMImplementation from xml.parsers.expat import ExpatError @@ -191,6 +191,14 @@ def testAppendChildNoQuadraticComplexity(self): # This example used to take at least 30 seconds. self.assertLess(end - start, 1) + def testSetAttributeNodeWithoutOwnerDocument(self): + # regression test for gh-142754 + elem = Element("test") + attr = Attr("id") + attr.value = "test-id" + elem.setAttributeNode(attr) + self.assertEqual(elem.getAttribute("id"), "test-id") + def testAppendChildFragment(self): dom, orig, c1, c2, c3, frag = self._create_fragment_test_nodes() dom.documentElement.appendChild(frag) diff --git a/Lib/xml/dom/minidom.py b/Lib/xml/dom/minidom.py index 0a2ccc00f1857d..16b33b90184dc5 100644 --- a/Lib/xml/dom/minidom.py +++ b/Lib/xml/dom/minidom.py @@ -364,6 +364,7 @@ class Attr(Node): def __init__(self, qName, namespaceURI=EMPTY_NAMESPACE, localName=None, prefix=None): self.ownerElement = None + self.ownerDocument = None self._name = qName self.namespaceURI = namespaceURI self._prefix = prefix @@ -689,6 +690,7 @@ class Element(Node): def __init__(self, tagName, namespaceURI=EMPTY_NAMESPACE, prefix=None, localName=None): + self.ownerDocument = None self.parentNode = None self.tagName = self.nodeName = tagName self.prefix = prefix diff --git a/Misc/NEWS.d/next/Library/2025-12-16-11-55-55.gh-issue-142754.xuCrt3.rst b/Misc/NEWS.d/next/Library/2025-12-16-11-55-55.gh-issue-142754.xuCrt3.rst new file mode 100644 index 00000000000000..d4e158ccb8c9e6 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2025-12-16-11-55-55.gh-issue-142754.xuCrt3.rst @@ -0,0 +1,4 @@ +Add the *ownerDocument* attribute to :mod:`xml.dom.minidom` elements and attributes +created by directly instantiating the ``Element`` or ``Attr`` class. Note that +this way of creating nodes is not supported; creator functions like +:py:meth:`xml.dom.Document.documentElement` should be used instead.