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[python] Fix @clientDefaultValue serialization regression from #10476 #10546

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[python] Fix @clientDefaultValue serialization regression from #10476 #10546

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131b844
Restore client default value materialization in Model.__init__
Copilot Apr 29, 2026
8d85468
Merge branch 'main' into copilot/fix-issue-with-typespec
msyyc May 6, 2026
f56d56f
update spector dep
msyyc May 6, 2026
2b0fb14
Merge branch 'main' into copilot/fix-issue-with-typespec
msyyc May 8, 2026
899d204
extract regenerate-common.ts
msyyc May 8, 2026
79698d7
Merge branch 'python-regenerate-common' of https://github.com/microso…
msyyc May 8, 2026
5632343
format
msyyc May 8, 2026
8f415a7
optimize
msyyc May 9, 2026
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Merge branch 'main' into copilot/fix-issue-with-typespec
msyyc May 9, 2026
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7 changes: 7 additions & 0 deletions ...onus/changes/python-fix-client-default-value-serialization-2026-4-29-10-23-0.md
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---
changeKind: fix
packages:
- "@typespec/http-client-python"
---

Fix serialization regression where `@clientDefaultValue` defaults on model properties were no longer included in the request body. Defaults are again materialized in the model's data dictionary at construction time so they are sent on the wire, while the attribute-access fallback for unset fields is preserved.
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