ParseError: not well-formed (invalid token) using cElementTree

Question

I receive xml strings from an external source that can contains unsanitized user contributed content.

The following xml string gave a ParseError in cElementTre

Answer 1

See this answer to another question and the according part of the XML spec.

The backspace U+0008 is an invalid character in XML documents. It must be represented as escaped entity  and cannot occur plainly.

If you need to process this XML snippet, you must replace \x08 in s before feeding it into an XML parser.