xml.dom.minidom weirdness: bug?

[Gabriel Genellina]

En Tue, 29 Apr 2008 23:51:14 -0300, JYA <nospam at nospam.blah> escribió:

> What I'm doing, is read an xml file, create another dom object and copy  
> the element from one to the other.
>
> At no time do I ever modify the original dom object, yet it gets  
> modified.
>
> 		for y in x.getElementsByTagName('display-name'):
> 			elem.appendChild(y)
> 		tv_xml.appendChild(elem)

> You'll note that at no time do I modify the content of docxml, yet it  
> gets modified.
>
> The weirdness disappear if I change the line
> 	channellist = docxml.getElementsByTagName('channel')
> to
> 	channellist = copy.deepcopy(docxml.getElementsByTagName('channel'))
>
> However, my understanding is that it shouldn't be necessary.

I think that any element can have only a single parent. If you get an  
element from one document and insert it onto another document, it gets  
removed from the first.

-- 
Gabriel Genellina