Class NamedNodeMap

Lib/xml/dom/minidom.py:483–644

The attribute list is a transient interface to the underlying dictionaries. Mutations here will change the underlying element's dictionary. Ordering is imposed artificially and does not reflect the order of attributes as found in an input document.

class NamedNodeMap(object):
    """The attribute list is a transient interface to the underlying
    dictionaries.  Mutations here will change the underlying element's
    dictionary.

    Ordering is imposed artificially and does not reflect the order of
    attributes as found in an input document.
    """

    __slots__ = ('_attrs', '_attrsNS', '_ownerElement')

    def __init__(self, attrs, attrsNS, ownerElement):
        self._attrs = attrs
        self._attrsNS = attrsNS
        self._ownerElement = ownerElement

    def _get_length(self):
        return len(self._attrs)

    def item(self, index):
        try:
            return self[list(self._attrs.keys())[index]]
        except IndexError:
            return None

    def items(self):
        L = []
        for node in self._attrs.values():
            L.append((node.nodeName, node.value))
        return L

    def itemsNS(self):
        L = []
        for node in self._attrs.values():
            L.append(((node.namespaceURI, node.localName), node.value))
        return L

    def __contains__(self, key):
        if isinstance(key, str):
            return key in self._attrs
        else:
            return key in self._attrsNS

    def keys(self):
        return self._attrs.keys()

    def keysNS(self):
        return self._attrsNS.keys()

    def values(self):
        return self._attrs.values()

    def get(self, name, value=None):
        return self._attrs.get(name, value)

    __len__ = _get_length

    def _cmp(self, other):