AnyXml

A minimal reimplementation of ET.tostring that supports unescaped "raw" text content.

The standard library's ET.tostring always XML-escapes the text/tail content of elements (e.g. <, &), which makes it impossible to inject pre-built, already-valid XML fragments (or other raw strings) during serialization. This class provides :meth:tostring, which behaves similarly to ET.tostring but additionally supports:

• Strings wrapped in :class:RawText are emitted verbatim during serialization, without any escaping; regular str text is still escaped according to XML rules.
• Comment nodes (ET.Comment) and processing instruction nodes (ET.ProcessingInstruction) are rendered as <!--...--> and <?...?> respectively.
• Elements with no text and no children are rendered as self-closing tags (<tag/>).

Example

>>> el = ET.Element("p")
>>> el.text = AnyXml.RawText("<b>bold</b>")
>>> AnyXml.tostring(el)
'<p><b>bold</b></p>'