Generate JSON that strictly matches a schema with automatic retries.
Project description
LetsJSON
让模型输出强约束 JSON:
- 按 schema 校验字段与类型
- 不符合时自动重试(默认 3 次)
- 超过重试次数仍失败则抛错
使用
uv add letsjson
或者:
pip install letsjson
from openai import OpenAI
from letsjson import LetsJSON
import os
client = OpenAI(
api_key="你的 API key",
base_url="你的 API base URL",
)
generator = LetsJSON(client, model="你的 model name") # repeat 可选,默认 3
schema = {
"title": str,
"steps": [{"time": str, "location": str, "detail": str}],
}
result = generator.gen('''给我一个2天1夜的上海旅游计划''', schema)
print(result)
Schema 支持
- 对象:
{"name": str, "age": int} - 列表:
{"items": [str]}(列表 schema 必须且只能有 1 个元素类型) - 嵌套:
{"user": {"name": str}, "tags": [str]} - 类型严格校验:
int不接受boolfloat接受int和float(不接受bool)
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