246 lines
8.9 KiB
Python
246 lines
8.9 KiB
Python
from __future__ import annotations
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from statistics import mean
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from typing import Any
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from backend.data.contracts import ProviderResult
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def build_snapshot(
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trade_date: str,
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previous_trade_date: str,
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inputs: dict[str, ProviderResult | dict[str, Any]],
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) -> dict[str, Any]:
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daily_rows = _rows(inputs, "daily")
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daily = {str(row.get("ts_code") or ""): row for row in daily_rows}
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limits = _pool(_rows(inputs, "limit_up"), "涨停")
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broken = _pool(_rows(inputs, "broken"), "炸板")
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down_limits = _pool(_rows(inputs, "limit_down"), "跌停")
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previous_limits = _pool(_rows(inputs, "previous_limit_up"), "涨停")
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price_limits = {str(row.get("ts_code") or ""): row for row in _rows(inputs, "price_limits")}
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for row in broken:
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up_limit = _number(price_limits.get(row["identifier"], {}).get("up_limit"))
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row["distance_to_limit"] = (
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round((up_limit - row["price"]) / up_limit * 100, 2) if up_limit else None
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)
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yesterday = _yesterday(
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previous_limits,
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daily,
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limits,
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broken,
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down_limits,
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)
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up_count = sum(_number(row.get("pct_chg")) > 0 for row in daily_rows)
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down_count = sum(_number(row.get("pct_chg")) < 0 for row in daily_rows)
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flat_count = len(daily_rows) - up_count - down_count
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amount = sum(_number(row.get("amount")) * 1000 for row in daily_rows)
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seal_rate = len(limits) / max(len(limits) + len(broken), 1) * 100
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sectors = _sectors(limits)
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previous_sectors = _sectors(previous_limits)
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overview = {
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"up_count": up_count,
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"down_count": down_count,
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"flat_count": flat_count,
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"limit_up": len(limits),
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"limit_down": len(down_limits),
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"broken": len(broken),
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"seal_rate": round(seal_rate, 1),
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"amount": round(amount, 2),
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}
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return {
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"trade_date": trade_date,
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"previous_trade_date": previous_trade_date,
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"overview": overview,
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"limits": limits,
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"broken": broken,
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"down_limits": down_limits,
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"yesterday_limits": yesterday,
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"limit_performance": _performance(yesterday),
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"ladders": _ladders(limits),
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"sectors": sectors,
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"sector_rotation": _rotation(sectors, previous_sectors),
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}
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def _rows(
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inputs: dict[str, ProviderResult | dict[str, Any]], key: str
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) -> tuple[dict[str, Any], ...]:
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value = inputs.get(key)
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return value.rows if isinstance(value, ProviderResult) else ()
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def _pool(rows: tuple[dict[str, Any], ...], status: str) -> list[dict[str, Any]]:
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result = []
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for row in rows:
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identifier = str(row.get("ts_code") or "")
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amount = _number(row.get("amount")) * 1000
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result.append(
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{
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"identifier": identifier,
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"code": identifier.split(".")[0],
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"name": str(row.get("name") or "").strip(),
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"price": _number(row.get("close")),
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"change": _number(row.get("pct_chg")),
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"sector": str(row.get("industry") or "").strip(),
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"reason": "",
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"first_time": _time(row.get("first_time")),
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"last_time": _time(row.get("last_time")),
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"open_times": int(_number(row.get("open_times"))),
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"streak": max(1, int(_number(row.get("limit_times"), 1))),
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"turnover_rate": _number(row.get("turnover_ratio")),
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"amount": amount,
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"seal_amount": _number(row.get("fd_amount")),
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"float_market_value": _number(row.get("float_mv")),
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"status": status,
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}
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)
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return result
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def _yesterday(
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previous: list[dict[str, Any]],
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daily: dict[str, dict[str, Any]],
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current: list[dict[str, Any]],
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broken: list[dict[str, Any]],
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down: list[dict[str, Any]],
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) -> list[dict[str, Any]]:
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current_map = {row["identifier"]: row for row in current}
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broken_codes = {row["identifier"] for row in broken}
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down_codes = {row["identifier"] for row in down}
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result = []
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for prior in previous:
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identifier = prior["identifier"]
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quote = daily.get(identifier, {})
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change = _number(quote.get("pct_chg"))
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if identifier in current_map:
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outcome = "晋级"
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elif identifier in broken_codes:
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outcome = "炸板"
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elif identifier in down_codes:
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outcome = "跌停"
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elif change > 0:
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outcome = "红盘"
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else:
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outcome = "断板"
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result.append(
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{
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"identifier": identifier,
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"code": prior["code"],
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"name": prior["name"],
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"prior_streak": prior["streak"],
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"current_streak": current_map.get(identifier, {}).get("streak", 0),
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"current_change": change,
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"current_price": _number(quote.get("close")),
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"sector": prior["sector"],
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"reason": prior["reason"],
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"outcome": outcome,
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}
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)
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return result
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def _performance(rows: list[dict[str, Any]]) -> list[dict[str, Any]]:
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result = []
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for level in sorted({int(row["prior_streak"]) for row in rows}, reverse=True):
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group = [row for row in rows if int(row["prior_streak"]) == level]
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advanced = sum(row["outcome"] == "晋级" for row in group)
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positive = sum(_number(row["current_change"]) > 0 for row in group)
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outcomes = {
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outcome: sum(row["outcome"] == outcome for row in group)
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for outcome in ("晋级", "红盘", "断板", "炸板", "跌停")
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}
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result.append(
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{
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"level": level,
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"count": len(group),
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"advanced": advanced,
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"red": outcomes["红盘"],
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"broken": outcomes["断板"],
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"opened": outcomes["炸板"],
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"limit_down": outcomes["跌停"],
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"advance_rate": round(advanced / len(group) * 100, 1),
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"positive_rate": round(positive / len(group) * 100, 1),
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"average_change": round(mean(_number(row["current_change"]) for row in group), 2),
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}
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)
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return result
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def _ladders(rows: list[dict[str, Any]]) -> list[dict[str, Any]]:
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levels = sorted({int(row["streak"]) for row in rows}, reverse=True)
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return [
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{
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"level": level,
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"label": "首板" if level == 1 else f"{level}板",
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"count": sum(int(row["streak"]) == level for row in rows),
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"stocks": sorted(
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(row for row in rows if int(row["streak"]) == level),
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key=lambda row: row.get("first_time") or "99:99",
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),
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}
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for level in levels
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]
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def _sectors(rows: list[dict[str, Any]]) -> list[dict[str, Any]]:
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names = sorted({str(row.get("sector") or "").strip() for row in rows} - {""})
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result = []
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for name in names:
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stocks = [row for row in rows if str(row.get("sector") or "").strip() == name]
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leader = max(stocks, key=lambda row: (int(row["streak"]), _number(row["amount"])))
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max_streak = max(int(row["streak"]) for row in stocks)
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count = len(stocks)
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result.append(
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{
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"name": name,
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"count": count,
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"strength": min(100, 44 + count * 8 + max_streak * 5),
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"amount": round(sum(_number(row["amount"]) for row in stocks), 2),
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"leader": leader["name"],
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"representative": leader["identifier"],
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"change": round(mean(_number(row["change"]) for row in stocks), 2),
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"max_streak": max_streak,
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}
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)
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return sorted(
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result,
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key=lambda row: (int(row["count"]), int(row["max_streak"]), _number(row["amount"])),
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reverse=True,
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)[:20]
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def _rotation(
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current: list[dict[str, Any]], previous: list[dict[str, Any]]
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) -> list[dict[str, Any]]:
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previous_map = {str(row["name"]): row for row in previous}
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result = []
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for rank, sector in enumerate(current[:12], start=1):
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previous_count = int(previous_map.get(str(sector["name"]), {}).get("count") or 0)
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delta = int(sector["count"]) - previous_count
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result.append(
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{
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**sector,
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"rank": rank,
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"previous_count": previous_count,
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"delta": delta,
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"trend": "升温" if delta > 0 else "降温" if delta < 0 else "持平",
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}
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)
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return result
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def _number(value: Any, default: float = 0.0) -> float:
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try:
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number = float(value)
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return number if number == number else default
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except (TypeError, ValueError):
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return default
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def _time(value: Any) -> str:
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text = str(value or "").strip().replace(":", "")
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if len(text) < 4 or not text[:4].isdigit():
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return ""
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return f"{text[:2]}:{text[2:4]}"
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