most complete xml package for Python?

[metaperl]

Without even checking them all out, I'm thinking the Amara XML Toolkit
must be the most feature-packed. The developers are readily available
on IRC for support and they seem to make regular releases.

As a meld3 user, I have been using ElementTree under the hood, but was
dismayed to find out that you can't find elements by attribute and I
am finding it difficult to remove elements.

So I am out shopping for a new friend to grok XML.

Input welcome.