aszerW
2867ae8d21
重构说明： - TushareSource: 新增 fetch_etf_with_nav() 和 _calculate_premium_series() - UniversalDataFetcher: 简化 fetch_etf_with_nav() 为透传调用 - Flask: 更新注释说明数据层已处理 架构优势： - 职责分离：TushareSource 封装完整数据获取逻辑 - 可复用性：任何调用 TushareSource 的地方都有净值 - 维护性：业务逻辑集中在数据源层 - 符合单一职责原则
565 lines
20 KiB
Python
565 lines
20 KiB
Python
"""
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Tushare数据源
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获取A股指数、ETF、期货数据
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"""
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import os
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from typing import Optional, Tuple
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from datetime import datetime
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import pandas as pd
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class TushareSource:
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"""Tushare数据源"""
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def __init__(self, token: Optional[str] = None):
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"""
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初始化Tushare数据源
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Args:
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token: Tushare Token（可选，默认从环境变量读取）
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"""
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self._token = token or os.getenv("TUSHARE_TOKEN")
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if not self._token:
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raise ValueError("请设置环境变量 TUSHARE_TOKEN")
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def _get_pro_api(self):
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"""获取Tushare Pro API"""
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import tushare as ts
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return ts.pro_api(self._token)
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def fetch_index(self, code: str, start_date: str, end_date: str) -> Optional[pd.DataFrame]:
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"""
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获取A股指数数据
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Args:
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code: 指数代码，如 '000300.SH', '399006.SZ', 'H30269.CSI'
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start_date: 开始日期 'YYYY-MM-DD'
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end_date: 结束日期 'YYYY-MM-DD'
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Returns:
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DataFrame with columns: date, open, high, low, close, volume
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"""
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try:
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pro = self._get_pro_api()
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# 转换代码格式 (.SS -> .SH)
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ts_code = code.replace(".SS", ".SH")
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df = pro.index_daily(
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ts_code=ts_code,
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start_date=start_date.replace("-", ""),
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end_date=end_date.replace("-", "")
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)
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if df is None or len(df) == 0:
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return None
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# 标准化列名
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df = df.rename(columns={
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"trade_date": "date",
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"vol": "volume",
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})
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# 转换日期格式
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df["date"] = pd.to_datetime(df["date"])
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df = df.set_index("date")
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df = df.sort_index()
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df["code"] = code
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return df[['code', 'open', 'high', 'low', 'close', 'volume']]
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except Exception as e:
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print(f"Tushare下载指数 {code} 失败: {e}")
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return None
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def fetch_futures(self, code: str, start_date: str, end_date: str) -> Optional[pd.DataFrame]:
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"""
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获取期货数据
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Args:
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code: 期货代码，如 'AU.SHF', 'CU.SHF'
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start_date: 开始日期
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end_date: 结束日期
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"""
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try:
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pro = self._get_pro_api()
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# 使用 fut_daily 接口
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df = pro.fut_daily(
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ts_code=code,
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start_date=start_date.replace("-", ""),
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end_date=end_date.replace("-", "")
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)
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if df is None or len(df) == 0:
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return None
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# 标准化列名
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df = df.rename(columns={
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"trade_date": "date",
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"vol": "volume",
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})
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df["date"] = pd.to_datetime(df["date"])
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df = df.set_index("date")
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df = df.sort_index()
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df["code"] = code
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return df[['code', 'open', 'high', 'low', 'close', 'volume']]
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except Exception as e:
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print(f"Tushare下载期货 {code} 失败: {e}")
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return None
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def fetch_etf(self, code: str, start_date: str, end_date: str) -> Optional[pd.DataFrame]:
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"""
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获取ETF价格数据
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Args:
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code: ETF代码，如 '159915.SZ', '518880.SH'
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"""
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try:
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pro = self._get_pro_api()
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ts_code = code.replace(".SS", ".SH")
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df = pro.fund_daily(
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ts_code=ts_code,
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start_date=start_date.replace("-", ""),
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end_date=end_date.replace("-", "")
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)
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if df is None or len(df) == 0:
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return None
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df = df.rename(columns={
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"trade_date": "date",
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"vol": "volume",
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})
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df["date"] = pd.to_datetime(df["date"])
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df = df.set_index("date")
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df = df.sort_index()
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df["code"] = code
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return df[['code', 'open', 'high', 'low', 'close', 'volume']]
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except Exception as e:
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print(f"Tushare下载ETF {code} 失败: {e}")
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return None
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def fetch_etf_nav(self, code: str, start_date: str, end_date: str) -> Optional[pd.DataFrame]:
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"""
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获取ETF净值数据
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Args:
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code: ETF代码
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"""
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try:
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pro = self._get_pro_api()
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ts_code = code.replace(".SS", ".SH")
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df = pro.fund_nav(
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ts_code=ts_code,
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start_date=start_date.replace("-", ""),
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end_date=end_date.replace("-", "")
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)
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if df is None or len(df) == 0:
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return None
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df = df.rename(columns={
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"nav_date": "date",
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"unit_nav": "nav",
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})
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df["date"] = pd.to_datetime(df["date"])
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df = df.set_index("date")
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df = df.sort_index()
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df["code"] = code
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return df[['code', 'nav']]
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except Exception as e:
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print(f"Tushare下载ETF净值 {code} 失败: {e}")
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return None
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def is_china_index(self, code: str) -> bool:
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"""判断是否为A股指数（排除 ETF）"""
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# 先排除 ETF
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if self._is_etf_code(code):
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return False
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return code.endswith(".SH") or code.endswith(".SZ") or code.endswith(".SS") or code.endswith(".CSI")
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def is_futures(self, code: str) -> bool:
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"""判断是否为中国期货（仅支持上期所、大商所、郑商所）"""
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# 只支持中国交易所期货（.SHF上期所、.DCE大商所、.CZC郑商所）
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# NYMEX (.NYM) 和 ICE (.ICE) 走 YFinance
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return ".SHF" in code or ".DCE" in code or ".CZC" in code
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def is_china_stock(self, code: str) -> bool:
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"""判断是否为A股股票（6位数字代码 + .SZ/.SH/.SS）"""
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# 股票代码：000001.SZ, 600000.SH 等
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# 区分指数：指数代码通常是 000xxx.SH, 399xxx.SZ, H30xxx.CSI
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# 股票代码通常是 00xxxx.SZ, 30xxxx.SZ, 60xxxx.SH, 000xxx.SH（部分）
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import re
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# 股票代码模式：6位数字 + .SZ/.SH/.SS
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# 排除指数：000xxx.SH (指数), 399xxx.SZ (指数), Hxxxxx.CSI (指数)
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if not re.match(r'^\d{6}\.(SZ|SH|SS)$', code):
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return False
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# 000xxx.SH 可能是指数也可能是股票，需要更细致判断
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# 简化处理：000/001/002/003 开头 + .SZ 是股票，600/601/603 开头 + .SH 是股票
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prefix = code[:3]
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suffix = code.split('.')[1]
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if suffix == 'SZ' and prefix in ['000', '001', '002', '003', '300']:
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return True
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if suffix == 'SH' and prefix in ['600', '601', '603', '605', '688']:
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return True
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return False
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def fetch(self, code: str, start_date: str, end_date: str, adj: str = 'raw') -> Optional[pd.DataFrame]:
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"""
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通用数据获取（自动判断类型，支持 adj 参数）
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Args:
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code: 代码
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start_date: 开始日期
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end_date: 结束日期
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adj: 复权类型 'raw'(原始) / 'qfq'(前复权) / 'hfq'(后复权)，默认 'raw'
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Returns:
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DataFrame with columns: date, open, high, low, close, volume
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adj='hfq' 时 A股 ETF 会额外返回 adj_factor, close_hfq
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"""
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# 校验 adj 参数
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if adj not in ['raw', 'qfq', 'hfq']:
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raise ValueError(f"adj 参数必须是 'raw', 'qfq' 或 'hfq'，当前: {adj}")
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# 原始数据
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if adj == 'raw':
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# 优先判断 ETF（修复：ETF 原始数据获取）
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if self._is_etf_code(code):
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return self.fetch_etf(code, start_date, end_date)
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elif self.is_china_index(code):
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return self.fetch_index(code, start_date, end_date)
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elif self.is_futures(code):
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return self.fetch_futures(code, start_date, end_date)
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elif self.is_china_stock(code):
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return self.fetch_stock_adj(code, start_date, end_date, adj='raw')
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else:
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return None
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# 复权数据
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if adj in ['qfq', 'hfq']:
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# A股股票复权
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if self.is_china_stock(code):
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return self.fetch_stock_adj(code, start_date, end_date, adj)
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# A股 ETF 仅支持 hfq
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elif self._is_etf_code(code):
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if adj == 'hfq':
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return self.fetch_etf_adj(code, start_date, end_date)
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else:
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raise ValueError(f"ETF 仅支持 adj='hfq'（后复权），当前: {adj}")
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else:
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# 指数/期货不支持复权
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raise ValueError(f"指数/期货不支持复权，adj='{adj}' 仅适用于股票/ETF")
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def _is_etf_code(self, code: str) -> bool:
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"""判断是否为ETF代码"""
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# ETF代码：51xxxx.SH, 52xxxx.SH, 15xxxx.SZ, 16xxxx.SZ
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import re
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if not re.match(r'^\d{6}\.(SZ|SH)$', code):
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return False
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prefix = code[:2]
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return prefix in ['51', '52', '15', '16']
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def fetch_etf_with_nav(
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self,
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code: str,
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start_date: str,
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end_date: str
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) -> Tuple[Optional[pd.DataFrame], Optional[pd.DataFrame], Optional[pd.Series]]:
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"""
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获取ETF完整数据（价格 + 净值 + 溢价率序列）
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Args:
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code: ETF代码，如 '159915.SZ', '518880.SH'
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start_date: 开始日期 'YYYY-MM-DD'
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end_date: 结束日期 'YYYY-MM-DD'
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Returns:
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(price_df, nav_df, premium_series)
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- price_df: ETF价格数据 (OHLCV)
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- nav_df: ETF净值数据
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- premium_series: 溢价率序列 (每天计算)
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"""
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# 1. 获取价格
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price_df = self.fetch_etf(code, start_date, end_date)
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# 2. 获取净值
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nav_df = self.fetch_etf_nav(code, start_date, end_date)
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# 3. 计算溢价率
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premium_series = None
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if price_df is not None and nav_df is not None and len(nav_df) > 0:
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premium_series = self._calculate_premium_series(price_df, nav_df)
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return price_df, nav_df, premium_series
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def _calculate_premium_series(
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self,
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price_df: pd.DataFrame,
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nav_df: pd.DataFrame
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) -> Optional[pd.Series]:
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"""
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计算历史溢价率序列
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溢价率 = (ETF收盘价 - ETF净值) / ETF净值
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关键：不同QDII基金净值披露规则不同
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- 部分基金净值当天披露（如日经ETF）：价格日期=净值日期
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- 部分基金净值T+1披露（如纳指ETF）：价格日期配T-1日净值
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集思录做法：根据基金特性选择匹配方式
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- 如果有当天净值数据，优先使用当天净值
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- 如果当天净值不存在，使用T-1日净值
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Args:
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price_df: ETF价格数据（索引为日期）
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nav_df: ETF净值数据（索引为日期）
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Returns:
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溢价率Series（索引为价格日期，值为溢价率）
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"""
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# 去除重复日期
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price_index = price_df.index
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if price_index.has_duplicates:
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price_df = price_df[~price_df.index.duplicated(keep='last')]
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nav_index = nav_df.index
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if nav_index.has_duplicates:
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nav_df = nav_df[~nav_df.index.duplicated(keep='last')]
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# 优先尝试使用当天净值（如日经ETF）
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same_day_dates = price_df.index.intersection(nav_df.index)
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# 对于没有当天净值的日期，使用T-1日净值（如纳指ETF）
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nav_df_shifted = nav_df.copy()
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nav_df_shifted.index = nav_df_shifted.index + pd.Timedelta(days=1)
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shifted_dates = price_df.index.intersection(nav_df_shifted.index)
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# 排除已有当天净值的日期
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t1_dates = shifted_dates.difference(same_day_dates)
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premium_data = {}
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# 使用当天净值计算
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if len(same_day_dates) > 0:
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close_same = price_df.loc[same_day_dates, 'close']
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nav_same = nav_df.loc[same_day_dates, 'nav']
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for date in same_day_dates:
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if pd.notna(close_same.loc[date]) and pd.notna(nav_same.loc[date]):
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premium_data[date] = (close_same.loc[date] - nav_same.loc[date]) / nav_same.loc[date]
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# 使用T-1日净值计算（仅用于没有当天净值的日期）
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if len(t1_dates) > 0:
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close_t1 = price_df.loc[t1_dates, 'close']
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nav_t1 = nav_df_shifted.loc[t1_dates, 'nav']
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for date in t1_dates:
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if pd.notna(close_t1.loc[date]) and pd.notna(nav_t1.loc[date]):
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premium_data[date] = (close_t1.loc[date] - nav_t1.loc[date]) / nav_t1.loc[date]
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if len(premium_data) == 0:
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return None
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# 构建Series并按日期排序
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premium = pd.Series(premium_data)
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premium = premium.sort_index()
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premium = premium.dropna()
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return premium
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def fetch_etf_adj(self, code: str, start_date: str, end_date: str) -> Optional[pd.DataFrame]:
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"""
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获取 ETF 后复权价格数据
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通过 fund_daily + fund_adj 手动计算后复权价格，消除份额折算（拆分）对收益率的影响。
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fund_adj 单次限 2000 条，按 5 年分段请求再拼接。
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Args:
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code: ETF代码，如 '159915.SZ', '518880.SH'
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start_date: 开始日期 'YYYY-MM-DD'
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end_date: 结束日期 'YYYY-MM-DD'
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Returns:
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DataFrame with columns: date, open, close, adj_factor, close_hfq
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"""
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try:
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pro = self._get_pro_api()
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ts_code = code.replace('.SS', '.SH')
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# 获取 fund_daily 数据
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df_daily = pro.fund_daily(
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ts_code=ts_code,
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start_date=start_date.replace('-', ''),
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end_date=end_date.replace('-', '')
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)
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if df_daily is None or len(df_daily) == 0:
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return None
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# 获取 fund_adj 数据（分段请求，单次限2000条）
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# 按5年分段
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start_dt = datetime.strptime(start_date, '%Y-%m-%d')
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end_dt = datetime.strptime(end_date, '%Y-%m-%d')
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adj_chunks = []
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chunk_start = start_dt
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while chunk_start < end_dt:
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chunk_end = min(chunk_start.replace(year=chunk_start.year + 5), end_dt)
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chunk_start_str = chunk_start.strftime('%Y%m%d')
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chunk_end_str = chunk_end.strftime('%Y%m%d')
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df_adj_chunk = pro.fund_adj(
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ts_code=ts_code,
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start_date=chunk_start_str,
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end_date=chunk_end_str
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)
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if df_adj_chunk is not None and len(df_adj_chunk) > 0:
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adj_chunks.append(df_adj_chunk)
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chunk_start = chunk_end
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if not adj_chunks:
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# 无复权因子，返回原始数据
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df = df_daily.rename(columns={'trade_date': 'date', 'vol': 'volume'})
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df['date'] = pd.to_datetime(df['date'])
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df = df.set_index('date').sort_index()
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df['adj_factor'] = 1.0
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df['close_hfq'] = df['close']
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df['code'] = code
|
||
return df[['code', 'open', 'close', 'adj_factor', 'close_hfq']]
|
||
|
||
# 合并所有复权因子
|
||
df_adj = pd.concat(adj_chunks, ignore_index=True)
|
||
df_adj = df_adj.rename(columns={'trade_date': 'date'})
|
||
df_adj['date'] = pd.to_datetime(df_adj['date'])
|
||
df_adj = df_adj.set_index('date').sort_index()
|
||
|
||
# 合并 daily 和 adj
|
||
df_daily = df_daily.rename(columns={'trade_date': 'date', 'vol': 'volume'})
|
||
df_daily['date'] = pd.to_datetime(df_daily['date'])
|
||
df_daily = df_daily.set_index('date').sort_index()
|
||
|
||
# 复权因子对齐（用最新值）
|
||
df_adj_aligned = df_adj.reindex(df_daily.index, method='ffill')
|
||
df_adj_aligned['adj_factor'] = df_adj_aligned['adj_factor'].fillna(1.0)
|
||
|
||
# 计算后复权价格
|
||
df = df_daily.copy()
|
||
df['adj_factor'] = df_adj_aligned['adj_factor']
|
||
df['close_hfq'] = df['close'] * df['adj_factor']
|
||
df['code'] = code
|
||
|
||
return df[['code', 'open', 'close', 'adj_factor', 'close_hfq']]
|
||
|
||
except Exception as e:
|
||
print(f"Tushare下载ETF复权数据 {code} 失败: {e}")
|
||
return None
|
||
|
||
def fetch_trade_cal(self, start_date: str, end_date: str) -> pd.DatetimeIndex:
|
||
"""
|
||
获取 A 股（上交所 SSE）官方交易日历
|
||
|
||
Args:
|
||
start_date: 开始日期 'YYYY-MM-DD'
|
||
end_date: 结束日期 'YYYY-MM-DD'
|
||
|
||
Returns:
|
||
DatetimeIndex: A股交易日日期序列
|
||
"""
|
||
try:
|
||
pro = self._get_pro_api()
|
||
|
||
df = pro.trade_cal(
|
||
exchange='SSE',
|
||
start_date=start_date.replace('-', ''),
|
||
end_date=end_date.replace('-', ''),
|
||
is_open='1'
|
||
)
|
||
|
||
if df is None or len(df) == 0:
|
||
return pd.DatetimeIndex([])
|
||
|
||
# 提取交易日并转换为 DatetimeIndex
|
||
trade_dates = pd.to_datetime(df['cal_date'])
|
||
return pd.DatetimeIndex(trade_dates.sort_values())
|
||
|
||
except Exception as e:
|
||
print(f"Tushare下载交易日历失败: {e}")
|
||
return pd.DatetimeIndex([])
|
||
|
||
def fetch_stock_adj(self, code: str, start_date: str, end_date: str, adj: str = 'hfq') -> Optional[pd.DataFrame]:
|
||
"""
|
||
获取 A股股票复权价格数据
|
||
|
||
使用 pro_bar 接口获取前复权(qfq)或后复权(hfq)价格。
|
||
|
||
Args:
|
||
code: 股票代码，如 '000001.SZ', '600000.SH'
|
||
start_date: 开始日期 'YYYY-MM-DD'
|
||
end_date: 结束日期 'YYYY-MM-DD'
|
||
adj: 复权类型 'qfq'(前复权) 或 'hfq'(后复权)，默认 'hfq'
|
||
|
||
Returns:
|
||
DataFrame with columns: date, code, open, high, low, close, volume, adj_factor
|
||
"""
|
||
import tushare as ts
|
||
|
||
if adj not in ['qfq', 'hfq']:
|
||
raise ValueError(f"adj 参数必须是 'qfq' 或 'hfq'，当前: {adj}")
|
||
|
||
try:
|
||
ts_code = code.replace('.SS', '.SH')
|
||
|
||
# 使用 pro_bar 接口获取复权数据
|
||
df = ts.pro_bar(
|
||
ts_code=ts_code,
|
||
adj=adj,
|
||
start_date=start_date.replace('-', ''),
|
||
end_date=end_date.replace('-', ''),
|
||
adjfactor=True # 返回复权因子
|
||
)
|
||
|
||
if df is None or len(df) == 0:
|
||
return None
|
||
|
||
# 标准化列名
|
||
df = df.rename(columns={
|
||
'ts_code': 'code',
|
||
'trade_date': 'date',
|
||
'vol': 'volume',
|
||
})
|
||
|
||
# 转换日期格式
|
||
df['date'] = pd.to_datetime(df['date'])
|
||
df = df.set_index('date')
|
||
df = df.sort_index()
|
||
|
||
# 恢复原始代码格式（.SS -> .SH 反转）
|
||
df['code'] = code
|
||
|
||
# 标准化返回字段
|
||
columns = ['code', 'open', 'high', 'low', 'close', 'volume']
|
||
if 'adj_factor' in df.columns:
|
||
columns.append('adj_factor')
|
||
|
||
return df[columns]
|
||
|
||
except Exception as e:
|
||
print(f"Tushare下载股票复权数据 {code} 失败: {e}")
|
||
return None |