How to retrieve the parent node using cElementTree?

问题

for the xml

<grandparent>
  <parent1>
     <child>data1</child>
  </parent1>
  <parent2>
     <child>data2</child>
  </parent2>
</grandparent>

I need the list containing tuples of parent,data for each parent in xml.

Is there a way to do it USING cElementTree? I am able to do it for child,data, but unfortunately child is identical in all the values, hence it is of not much use.

回答1:

parent_map = dict((c, p) for p in tree.getiterator() for c in p)
parent_map[el].remove(el)

回答2:

It seems you can get access to the parent from the child using version 1.3 of ElementTree (check http://effbot.org/zone/element-xpath.htm), by using xpath commands like child.find('../parent'). But I think python ships with version 1.2 or something.

You should also check for lxml which is compatible with etree and has full Xpath support http://lxml.de/

回答3:

This syntax seemed to work for cElementTree

ET.fromstring("<c><a><b></b></a></c>").find('.//b/..')

No going to base parent, and using double slash then single slash in path.
(would have posted as a comment to above thread but it seems I have no privilege to)

来源：https://stackoverflow.com/questions/374245/how-to-retrieve-the-parent-node-using-celementtree