[issue38056] Add examples for common text encoding Error Handlers

Change by Ma Lin : -- keywords: +patch pull_requests: +15386 stage: -> patch review pull_request: https://github.com/python/cpython/pull/15732 ___ Python tracker ___ _

[issue38056] Add examples for common text encoding Error Handlers

New submission from Ma Lin : Text descriptions about `Error Handlers` are not very friendly to novices. https://docs.python.org/3/library/codecs.html#error-handlers For example: 'xmlcharrefreplace' Replace with the appropriate XML character reference (only for encoding). Implemented i