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add tolerance for empty choices #4311

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@MohMaz MohMaz commented Nov 22, 2024

Why are these changes needed?

I encountered this issue only in AzureOpenAIChatCompletionClient, adding some tolerance for empty choices ! Not a super clean fix ... just works to unblock updating streaming samples using AzureOpenAIChatCompletionClient

Related issue number

closes #4213

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Signed-off-by: Mohammad Mazraeh <[email protected]>
@MohMaz MohMaz self-assigned this Nov 22, 2024
@MohMaz MohMaz marked this pull request as ready for review November 22, 2024 07:54
@MohMaz MohMaz requested a review from rysweet November 22, 2024 18:17
while True:
try:
chunk_future = asyncio.ensure_future(anext(stream))
if cancellation_token is not None:
cancellation_token.link_future(chunk_future)
chunk = await chunk_future

# This is to address a bug in AzureOpenAIChatCompletionClient. OpenAIChatCompletionClient works fine.
# https://github.com/microsoft/autogen/issues/4213
if len(chunk.choices) == 0:
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Do the chunks with no choices have other data set on other fields of the delta?

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@MohMaz MohMaz Nov 23, 2024

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I can't see anything int the chunk.__dict__. In the consecutive chunks, the choices gets populated properly and has all the expected fields.

{'id': '', 'choices': [], 'created': 0, 'model': '', 'object': '', 'service_tier': None, 'system_fingerprint': None, 'usage': None}

This has been happening only for the first 1-2 chunks to me, not sure if it's reproducible to all models. I've tried gpt-4o

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finish_reason not set in AzureOpenAIChatCompletionClient.create_stream
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