In the Python implementation it returns empty iterator for Comment and ProcessingInstruction. In the C implementation it emits their content.

>>> import xml.etree.ElementTree as ET
>>> list(ET.Comment('comment').itertext())
['comment']

cc @scoder

Linked PRs

• gh-149571: Make Element.itertext consistent for Comment and ProcessingInstruction #149714
• gh-149571: Fix the C implementation of Element.itertext() #149929
• [3.15] gh-149571: Fix the C implementation of Element.itertext() (GH-149929) #150509
• [3.14] gh-149571: Fix the C implementation of Element.itertext() (GH-149929) #150510
• [3.13] gh-149571: Fix the C implementation of Element.itertext() (GH-149929) #150511