- quant/selection.run_condition_selection:结构化条件 AND 求值 —— 字段域 static.*(行业/市场…)、技术列与派生量(close/volume/ma20/ma60)、已注册因子 (momentum_60 等)、fundamental.*(announce_date<=as_of 的最新已公告财务值); 条件支持 value 字面量与 ref 字段比较(如 close > ma60);结果带 filter_status/reason - SelectionQuery 校验调整:condition 模式为纯过滤(不再强制 top_n/top_pct) - FinancialRepository 新增 list_announced_many(批量防未来函数读取)+ SQLAlchemy 实现; SelectionService 注入 financial_repo 并按 announce_date 取每股最新一版 - tests/test_selection_condition.py:8 例(行业 in/ne、动量>0、close>ma60 ref、阈值、 ROE 过滤且未来公告不可见、缺财务 repo 报错、更早 as_of 排除);全量 pytest 通过
127 lines
5.6 KiB
Python
127 lines
5.6 KiB
Python
"""选股系统领域对象(ARCHITECTURE_v2 §14 Selection Engine)。
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回答两个核心问题(v2 §8):
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- 「某历史日(as_of)为什么选出这些股票?」→ SelectionResult 带 factor_values / selection_reason
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- 「当前(as_of)有哪些股票满足策略?」→ 同一条查询对当前日期执行
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设计:
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- SelectionQuery = v2 §14.2 的 Selection 输入(universe 范围 + 评分因子 + TopN 截断 + as_of)。
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- method=score:按因子加权复合分取 TopN(复用现有 9 个内置因子);
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method=condition:结构化条件选股(M6.2 加入 ConditionSpec)。
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- 结果不落库由本实体负责(落库表在 M6.3);本实体是前后端/Agent 的统一 DTO(v2 §21.1)。
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- 所有查询天然带 as_of 语义:只允许使用 <= as_of 的数据(v2 §9 防未来函数)。
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"""
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from __future__ import annotations
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from datetime import date
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from pydantic import BaseModel, Field, field_validator, model_validator
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from app.domain.entities.research import FactorSpec, UniverseSpec
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class SelectionQuery(BaseModel):
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"""一次选股查询(v2 §14.2 Selection 输入)。"""
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universe: UniverseSpec = UniverseSpec()
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# 研究时点:None → 引擎用 <= 今天最近可用交易日;显式给历史日期即做历史选股
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as_of: date | None = Field(
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default=None, description="选股时点;历史回测/解释用具体日期,当前选股可留空"
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)
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method: str = Field(default="score", pattern="^(score|condition)$")
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# method=score:因子 + 权重(至少 1 个;方向由因子元数据决定)
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factors: list[FactorSpec] = Field(default_factory=list)
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# method=condition:结构化条件(M6.2 引入 ConditionSpec 后启用)
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conditions: list[ConditionSpec] = Field(default_factory=list)
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# 截断:top_n(绝对数量)与 top_pct(占可评分股票比例)二选一;可选 min_score 下限
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top_n: int | None = Field(default=None, ge=1, le=2000)
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top_pct: float | None = Field(default=None, gt=0, le=1)
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min_score: float | None = None
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# 因子预热窗口(自然日):覆盖 lookback 前导数据,Lookback 放大时需同步加大
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warmup_days: int = Field(default=300, ge=0)
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@model_validator(mode="after")
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def _check_method_args(self) -> SelectionQuery:
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if self.method == "score":
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if not self.factors:
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raise ValueError("method=score 需要至少一个 factors")
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if self.top_n is None and self.top_pct is None:
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raise ValueError("method=score 需要 top_n 与 top_pct 至少提供一个")
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if self.method == "condition" and not self.conditions:
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raise ValueError("method=condition 需要至少一个 conditions")
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return self
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@model_validator(mode="after")
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def _no_duplicate_factors(self) -> SelectionQuery:
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names = [f.name for f in self.factors]
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if len(set(names)) != len(names):
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raise ValueError("factors 存在重复因子名")
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return self
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class ConditionSpec(BaseModel):
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"""结构化选股条件(M6.2 使用)。
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field 域:
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- static.*:股票基础字段(industry / market / area / exchange / status…)
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- 行情/技术字段:close / ma20 / ma60 / volume 及全部已注册因子名(momentum_60 等)
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- fundamental.*:财务字段(eps / roe / total_revenue / net_profit / gross_margin),
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仅取 announce_date <= as_of 的最新已公告值(防未来函数)
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右操作数取 value(字面量)或 ref(另一字段名),二者二选一。
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"""
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field: str
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op: str = Field(pattern="^(gt|gte|lt|lte|eq|ne|in|not_in)$")
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value: float | int | str | list | None = None
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ref: str | None = None # 与另一字段比较(如 close vs ma60)
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@model_validator(mode="after")
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def _require_operand(self) -> ConditionSpec:
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if self.value is None and self.ref is None:
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raise ValueError("value 与 ref 必须提供一个")
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if self.value is not None and self.ref is not None:
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raise ValueError("value 与 ref 只能提供一个")
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if self.op in ("in", "not_in") and not isinstance(self.value, list):
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raise ValueError("in/not_in 的 value 必须是列表")
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return self
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class SelectionCandidate(BaseModel):
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"""单只候选股(v2 §14.3/§21.1)。"""
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symbol: str
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rank: int
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score: float
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factor_values: dict[str, float] = Field(default_factory=dict)
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filter_status: list[str] = Field(default_factory=list, description="各条件通过/未通过")
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selection_reason: list[str] = Field(default_factory=list, description="为什么选它(可解释)")
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class SelectionStatistics(BaseModel):
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universe_size: int = 0 # 股票池过滤后数量
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evaluated: int = 0 # 有有效分数的股票数量
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selected: int = 0 # 最终选出数量
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class SelectionResult(BaseModel):
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"""选股结果(v2 §21.1)。前端 / Agent 只依赖该结构。"""
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as_of_date: date
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method: str
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statistics: SelectionStatistics
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candidates: list[SelectionCandidate] = Field(default_factory=list)
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unimplemented: list[str] = Field(
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default_factory=list,
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description="本结果中未建模的约束(如 exclude_suspended 依赖停牌数据未实现)",
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)
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config_snapshot: dict = Field(default_factory=dict, description="复现用查询快照")
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@field_validator("candidates")
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@classmethod
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def _rank_sorted(cls, candidates: list[SelectionCandidate]) -> list[SelectionCandidate]:
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return sorted(candidates, key=lambda c: c.rank)
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SelectionQuery.model_rebuild()
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