e489ad7a21
- **Add SPDX license headers to python source files**
- **Check for SPDX headers using pre-commit**
commit 9d7ef44c3cfb72ca4c32e1c677d99259d10d4745
Author: Russell Bryant <rbryant@redhat.com>
Date: Fri Jan 31 14:18:24 2025 -0500
Add SPDX license headers to python source files
This commit adds SPDX license headers to python source files as
recommended to
the project by the Linux Foundation. These headers provide a concise way
that is
both human and machine readable for communicating license information
for each
source file. It helps avoid any ambiguity about the license of the code
and can
also be easily used by tools to help manage license compliance.
The Linux Foundation runs license scans against the codebase to help
ensure
we are in compliance with the licenses of the code we use, including
dependencies. Having these headers in place helps that tool do its job.
More information can be found on the SPDX site:
- https://spdx.dev/learn/handling-license-info/
Signed-off-by: Russell Bryant <rbryant@redhat.com>
commit 5a1cf1cb3b80759131c73f6a9dddebccac039dea
Author: Russell Bryant <rbryant@redhat.com>
Date: Fri Jan 31 14:36:32 2025 -0500
Check for SPDX headers using pre-commit
Signed-off-by: Russell Bryant <rbryant@redhat.com>
---------
Signed-off-by: Russell Bryant <rbryant@redhat.com>
81 lines
2.4 KiB
Python
81 lines
2.4 KiB
Python
# SPDX-License-Identifier: Apache-2.0
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from enum import Enum
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from pydantic import BaseModel
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from vllm import LLM, SamplingParams
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from vllm.sampling_params import GuidedDecodingParams
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llm = LLM(model="Qwen/Qwen2.5-3B-Instruct", max_model_len=100)
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# Guided decoding by Choice (list of possible options)
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guided_decoding_params = GuidedDecodingParams(choice=["Positive", "Negative"])
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sampling_params = SamplingParams(guided_decoding=guided_decoding_params)
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outputs = llm.generate(
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prompts="Classify this sentiment: vLLM is wonderful!",
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sampling_params=sampling_params,
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)
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print(outputs[0].outputs[0].text)
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# Guided decoding by Regex
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guided_decoding_params = GuidedDecodingParams(regex="\w+@\w+\.com\n")
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sampling_params = SamplingParams(guided_decoding=guided_decoding_params,
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stop=["\n"])
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prompt = ("Generate an email address for Alan Turing, who works in Enigma."
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"End in .com and new line. Example result:"
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"alan.turing@enigma.com\n")
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outputs = llm.generate(prompts=prompt, sampling_params=sampling_params)
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print(outputs[0].outputs[0].text)
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# Guided decoding by JSON using Pydantic schema
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class CarType(str, Enum):
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sedan = "sedan"
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suv = "SUV"
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truck = "Truck"
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coupe = "Coupe"
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class CarDescription(BaseModel):
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brand: str
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model: str
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car_type: CarType
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json_schema = CarDescription.model_json_schema()
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guided_decoding_params = GuidedDecodingParams(json=json_schema)
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sampling_params = SamplingParams(guided_decoding=guided_decoding_params)
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prompt = ("Generate a JSON with the brand, model and car_type of"
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"the most iconic car from the 90's")
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outputs = llm.generate(
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prompts=prompt,
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sampling_params=sampling_params,
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)
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print(outputs[0].outputs[0].text)
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# Guided decoding by Grammar
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simplified_sql_grammar = """
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?start: select_statement
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?select_statement: "SELECT " column_list " FROM " table_name
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?column_list: column_name ("," column_name)*
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?table_name: identifier
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?column_name: identifier
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?identifier: /[a-zA-Z_][a-zA-Z0-9_]*/
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"""
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guided_decoding_params = GuidedDecodingParams(grammar=simplified_sql_grammar)
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sampling_params = SamplingParams(guided_decoding=guided_decoding_params)
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prompt = ("Generate an SQL query to show the 'username' and 'email'"
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"from the 'users' table.")
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outputs = llm.generate(
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prompts=prompt,
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sampling_params=sampling_params,
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)
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print(outputs[0].outputs[0].text)
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