ElementTree should use UTF-8 for xml declaration. #91810
Description
Feature or enhancement
Currently, ElementTree.tostring(root, encoding="unicode", xml_declaration=True) uses locale encoding.
I think ElementTree should use UTF-8, instead of locale encoding.
Example:
$ LANG=ja_JP.eucJP ./python.exe
Python 3.11.0a7+ (heads/bytes-alloc-dirty:7fbc7f6128, Apr 19 2022, 16:53:54) [Clang 12.0.0 (clang-1200.0.32.29)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import xml.etree.ElementTree as ET
>>> et = ET.fromstring("<t>hello</t>")
>>> ET.tostring(et, encoding="unicode", xml_declaration=True)
"<?xml version='1.0' encoding='eucJP'?>\n<t>hello</t>"Code:
cpython/Lib/xml/etree/ElementTree.py
Lines 732 to 742 in bcf14ae
Pitch
- UTF-8 is the most common encoding for XML.
- Locale encoding name (e.g.
cp932oreucJP) would be different from XML encoding name recommended by w3c (e.g.Shift_JISorEUC-JP).