xml.etree.ElementTree vs. lxml

These are some pros of the two most used libraries I would have benefit to know before choosing between them.

xml.etree.ElementTree:

1. From the standard library: no needs of installing any module

lxml

1. Easily write XML declaration: for instance do you need to add standalone="no"?
2. Pretty printing: you can have a nice indented XML without extra code.
3. Objectify functionality: It allows you to use XML as if you were dealing with a normal Python object hierarchy.node.