Class _MultiParentedElement

source code

etree.ElementTree._ElementInterface --+        
                                      |        
                       _AbstractElement --+    
                                          |    
                   _AbstractParentedElement --+
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                                             _MultiParentedElement

A specialized version of etree.ElementTree.Element that keeps track of a list of parent pointers for each element.

Each _ParentedElement may have zero or more parents. In particular, subtrees may be shared. If a single _MultiParentedElement is used as multiple children of the same parent, then that parent will appear multiple times in the parents list.

_MultiParentedElements should never be used in the same tree as other Element implementation classes. Mixing Element implementations may result in incorrect parent pointers and in ValueError exceptions.