[issue17088] ElementTree incorrectly refuses to write attributes without namespaces when default_namespace is used

[Maarten ter Huurne]

Change by Maarten ter Huurne <maarten at treewalker.org>:


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pull_requests: +10286
stage:  -> patch review

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue17088>
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