Re: ElementTree Issue - Search and remove elements

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From	Stefan Behnel <stefan_ml@behnel.de>
Subject	Re: ElementTree Issue - Search and remove elements
Date	Wed, 17 Oct 2012 09:01:56 +0200
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Alain Ketterlin, 17.10.2012 08:25:
> It looks like you can't get the parent of an Element with elementtree (I
> would love to be proven wrong on this).

No, that's by design. ElementTree allows you to reuse subtrees in a
document, for example, which wouldn't work if you enforced a single parent.
Also, keeping parent references out simplifies the tree structure
considerably, saves space and time and all that. ElementTree is really
great for what it does.

If you need to access the parent more often in a read-only tree, you can
quickly build up a back reference dict that maps each Element to its parent
by traversing the tree once.

Alternatively, use lxml.etree, in which Elements have a getparent() method
and in which single parents are enforced (also by design).

Stefan

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Thread

ElementTree Issue - Search and remove elements Tharanga Abeyseela <tharanga.abeyseela@gmail.com> - 2012-10-17 16:47 +1100
  Re: ElementTree Issue - Search and remove elements Alain Ketterlin <alain@dpt-info.u-strasbg.fr> - 2012-10-17 08:25 +0200
    Re: ElementTree Issue - Search and remove elements Stefan Behnel <stefan_ml@behnel.de> - 2012-10-17 09:01 +0200

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