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An explicit null value for parallel_tool_calls was falsy, causing it to be filtered the same as False. Gate on `is not False` so that None resolves to the documented default (True), matching an omitted field. Fixes vllm-project#44948 Signed-off-by: ADHITHYA BALAKRISHNAN <adhithya.b2004@gmail.com>
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Closing as duplicate of #44955 which addresses the same issue. |
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Summary
Fixes #44948.
An explicit
parallel_tool_calls: nullwas falsy in Python, so it fell through the truthiness check and was filtered the same asfalse— trimming responses to a single tool call. Since the documented default istrue, andnullmeans "unspecified", it should resolve to that default just like an omitted field.Root cause:
if request.parallel_tool_calls:fires for bothFalseandNone.Fix: Change to
if request.parallel_tool_calls is not False:so thatNone(andTrue) both pass through, matching the docstring that says filtering only applies "when parallel_tool_calls is False".True)truefalsenullAlso adds a unit test covering all three explicit values (
True,False,None) for both non-streaming and streaming choices.