63 lines
3.0 KiB
Python
63 lines
3.0 KiB
Python
"""可复用的提示词模板注册表。
|
||
|
||
后端只负责准备 evidence/context，模板负责描述任务；接入其它项目时可直接
|
||
替换模板或覆盖变量，不需要在业务代码里拼接提示词。
|
||
"""
|
||
from dataclasses import dataclass
|
||
import json
|
||
from pathlib import Path
|
||
|
||
PRODUCT_VARIABLES = {
|
||
"product": "商品基础信息：标题、商品ID、类目、品牌、价格、销量等页面字段",
|
||
"attributes": "商品参数/规格：仅包含页面实际采集到的名称和值",
|
||
"images": "图片证据：主图、详情图、SKU图、评论原图及其 evidenceId",
|
||
"reviews": "消费者评论：原文、评分、SKU、日期和评论 evidenceId",
|
||
"questions": "问大家/购买问答：问题、回答及 QA evidenceId",
|
||
"programStats": "程序统计：评论数量、图片数量、参数数量等可计算指标",
|
||
"evidence": "统一证据账本；模型只能引用其中的 evidenceId",
|
||
"roleOutputs": "七角色中间结论：商品策略、电商转化、消费者洞察、产品/供应链、视觉设计、老板决策与总编审核；只能交叉校验和编排，不得当作无证据事实",
|
||
"renderingPolicy": "最终可见性规则：只展示真实非空内容；证据以来源类型和内容摘要呈现，evidenceId仅用于追溯",
|
||
}
|
||
|
||
@dataclass(frozen=True)
|
||
class PromptTemplate:
|
||
name: str
|
||
body: str
|
||
variables: tuple = ()
|
||
|
||
def render(self, **values):
|
||
missing = [v for v in self.variables if v not in values]
|
||
if missing:
|
||
raise ValueError(f"模板 {self.name} 缺少变量: {', '.join(missing)}")
|
||
return self.body.format(**values)
|
||
|
||
TEMPLATES = {
|
||
"system": PromptTemplate("system", "{system}\n\n可用商品变量说明：\n{variable_schema}", ("system", "variable_schema")),
|
||
"task": PromptTemplate("task", "{task}\n\n输入变量：{input_variables}", ("task", "input_variables")),
|
||
}
|
||
|
||
def register_template(name, body, variables=()):
|
||
"""覆盖或新增模板，供宿主项目在启动时注入行业提示词。"""
|
||
TEMPLATES[name] = PromptTemplate(name, body, tuple(variables))
|
||
|
||
def render_template(name, **values):
|
||
if name not in TEMPLATES:
|
||
raise KeyError(f"未知提示词模板: {name}")
|
||
return TEMPLATES[name].render(**values)
|
||
|
||
def variable_schema():
|
||
return json.dumps(PRODUCT_VARIABLES, ensure_ascii=False, indent=2)
|
||
|
||
def build_system_prompt(system_text):
|
||
override=Path(__file__).with_name('prompts.json')
|
||
if override.exists():
|
||
try:
|
||
data=json.loads(override.read_text('utf-8'))
|
||
if data.get('system',{}).get('body'): return data['system']['body'].format(system=system_text, variable_schema=variable_schema())
|
||
except Exception: pass
|
||
return TEMPLATES["system"].render(system=system_text, variable_schema=variable_schema())
|
||
|
||
def build_task_prompt(task_text, variables=("evidence",)):
|
||
names = "、".join(f"{name}（{PRODUCT_VARIABLES.get(name, '任务上下文变量')}）" for name in variables)
|
||
return TEMPLATES["task"].render(task=task_text, input_variables=names)
|