Function _set_attribute_node

Lib/xml/dom/minidom.py:951–960

(element, attr)

def _set_attribute_node(element, attr):
    _clear_id_cache(element)
    element._ensure_attributes()
    element._attrs[attr.name] = attr
    element._attrsNS[(attr.namespaceURI, attr.localName)] = attr

    # This creates a circular reference, but Element.unlink()
    # breaks the cycle since the references to the attribute
    # dictionaries are tossed.
    attr.ownerElement = element

class Childless:
    """Mixin that makes childless-ness easy to implement and avoids