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Python: fix(openai): guard against null delta in streaming chunks from non-co… (#5734)

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* fix(openai): guard against null delta in streaming chunks from non-compliant providers (#5732)

* chore: resolve nit and align with project style

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Co-authored-by: Sergey Borisov <sergey.borisov@dataimpact.io>
Co-authored-by: Giles Odigwe <79032838+giles17@users.noreply.github.com>
This commit is contained in:
S3rj
2026-05-27 09:42:46 +02:00
committed by GitHub
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parent 08697f8037
commit e1e6e3d35e
2 changed files with 175 additions and 1 deletions
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python/packages/openai/agent_framework_openai/_chat_completion_client.py
+7 -1
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@@ -728,10 +728,16 @@ class RawOpenAIChatCompletionClient( # type: ignore[misc]
for choice in chunk.choices:
chunk_metadata.update(self._get_metadata_from_chat_choice(choice))
contents.extend(self._parse_tool_calls_from_openai(choice))
if choice.finish_reason:
finish_reason = choice.finish_reason # type: ignore[assignment]
# Some OpenAI-compatible providers (e.g. Azure) send `"delta": null`
# on finish chunks instead of the spec-compliant `"delta": {}`.
# Guard here so all content-parsing below can assume delta is present.
if choice.delta is None: # pyright: ignore[reportUnnecessaryComparison]
continue
contents.extend(self._parse_tool_calls_from_openai(choice))
if text_content := self._parse_text_from_openai(choice):
contents.append(text_content)
if reasoning_details := getattr(choice.delta, "reasoning_details", None):