ElementTree incorrectly refuses to write attributes without namespaces when default_namespace is used #61290

assignee = None
closed_at = None
created_at = <Date 2013-01-31.02:35:07.204>
labels = ['expert-XML', 'type-bug', '3.10', '3.11']
title = 'ElementTree incorrectly refuses to write attributes without namespaces when default_namespace is used'
updated_at = <Date 2021-07-19.12:58:02.922>
user = 'https://github.com/SilverbackNet'

activity = <Date 2021-07-19.12:58:02.922>
actor = 'scoder'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['XML']
creation = <Date 2013-01-31.02:35:07.204>
creator = 'silverbacknet'
dependencies = []
files = ['32981', '33125']
hgrepos = []
issue_num = 17088
keywords = ['patch']
message_count = 17.0
messages = ['181005', '205281', '205951', '206156', '206186', '206217', '209424', '216061', '216067', '261785', '304120', '331390', '331432', '354101', '365760', '397793', '397794']
nosy_count = 14.0
nosy_names = ['rhettinger', 'scoder', 'eli.bendersky', 'wiml', 'silverbacknet', 'martin.panter', 'SpecLad', 'gene_wood', 'marczellm', 'Garrett Birkel', 'Rafael Ascensao', 'mthuurne', 'carlschaefer', 'dtluttik']
pr_nums = ['11050']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue17088'
versions = ['Python 3.10', 'Python 3.11']