[Python-bugs-list] [ python-Feature Requests-715263 ] Access to DOM Element attributes using __getitem__

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Feature Requests item #715263, was opened at 2003-04-04 07:26
Message generated for change (Comment added) made by fdrake
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Category: XML
Group: None
>Status: Closed
>Resolution: Rejected
Priority: 5
Submitted By: chris burdess (bluezoo)
Assigned to: Fred L. Drake, Jr. (fdrake)
Summary: Access to DOM Element attributes using __getitem__

Initial Comment:
Element objects in XML DOM implementations in Python

should provide access to their attributes in a standard

Python way, using __getitem__. Thus, the following code

to print the version of an XMI document should work:



  import xml.dom.minidom

  print

xml.dom.minidom.parse(filename).documentElement['xmi.version']



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>Comment By: Fred L. Drake, Jr. (fdrake)
Date: 2003-09-09 23:53

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It's not clear that this is reasonable.



DOM Level 2 elements may provide access to attributes using

either name (qualified name if namespaces are in play), or

(uri, localname) pairs.  What constitutes the "right thing"

isn't clear, but implementing a __getitem__() that takes

either a name or a pair seems too magical.



The DOM API is already huge; extending it, even when the

"right thing" is clear, is pretty risky, and introduces true

difficulty and compatibility issues for implementors.



For these reasons, I'm rejecting this request.  To appeal,

this matter should be taken up on the XML-SIG mailing list;

I'll make sure minidom conforms to decisions of group.  I

can't speak for the other implementors.

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Comment By: Raymond Hettinger (rhettinger)
Date: 2003-05-12 13:52

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At first blush, this seems reasonble.  Fred, what do you 

think?

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