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

What helped me with that error was Juan's answer - https://stackoverflow.com/a/20204635/4433222 But wasn't enough - after struggling I found out that an XML file needs to be saved with UTF-8 without BOM encoding.

The solution wasn't working for "normal" UTF-8.