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[Structured Output] Make the output of structured output example more complete #22481

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Merged
merged 2 commits into from
Aug 15, 2025
Merged

[Structured Output] Make the output of structured output example more complete #22481

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df102f0
Make structured output example output more complete
shen-shanshan Aug 7, 2025
c35a0e3
Merge branch 'main' into example
russellb Aug 15, 2025
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16 changes: 13 additions & 3 deletions examples/offline_inference/structured_outputs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,8 @@
from vllm import LLM, SamplingParams
from vllm.sampling_params import GuidedDecodingParams

MAX_TOKENS = 50

# Guided decoding by Choice (list of possible options)
guided_decoding_params_choice = GuidedDecodingParams(choice=["Positive", "Negative"])
sampling_params_choice = SamplingParams(guided_decoding=guided_decoding_params_choice)
Expand All @@ -23,7 +25,9 @@
# Guided decoding by Regex
guided_decoding_params_regex = GuidedDecodingParams(regex=r"\w+@\w+\.com\n")
sampling_params_regex = SamplingParams(
guided_decoding=guided_decoding_params_regex, stop=["\n"]
guided_decoding=guided_decoding_params_regex,
stop=["\n"],
max_tokens=MAX_TOKENS,
)
prompt_regex = (
"Generate an email address for Alan Turing, who works in Enigma."
Expand All @@ -48,7 +52,10 @@ class CarDescription(BaseModel):

json_schema = CarDescription.model_json_schema()
guided_decoding_params_json = GuidedDecodingParams(json=json_schema)
sampling_params_json = SamplingParams(guided_decoding=guided_decoding_params_json)
sampling_params_json = SamplingParams(
guided_decoding=guided_decoding_params_json,
max_tokens=MAX_TOKENS,
)
prompt_json = (
"Generate a JSON with the brand, model and car_type of"
"the most iconic car from the 90's"
Expand All @@ -64,7 +71,10 @@ class CarDescription(BaseModel):
number ::= "1 " | "2 "
"""
guided_decoding_params_grammar = GuidedDecodingParams(grammar=simplified_sql_grammar)
sampling_params_grammar = SamplingParams(guided_decoding=guided_decoding_params_grammar)
sampling_params_grammar = SamplingParams(
guided_decoding=guided_decoding_params_grammar,
max_tokens=MAX_TOKENS,
)
prompt_grammar = (
"Generate an SQL query to show the 'username' and 'email'from the 'users' table."
)
Expand Down