ZhuLinsen/daily_stock_analysis · warning · DataFetchError

BaostockFetcher 不支持港股 {stock_code}，请使用 AkshareFetcher

Error message

BaostockFetcher 不支持港股 {stock_code}，请使用 AkshareFetcher

What it means

A guard DataFetchError raised in BaostockFetcher's fetch entry when _is_hk_market(stock_code) is True (and the US check above already passed). It is the fetch-path duplicate of the _convert_stock_code guard (line 151): HK codes never reach a baostock query, and the error text tells the caller to use AkshareFetcher.

Source

Thrown at data_provider/baostock_fetcher.py:209

        """
        从 Baostock 获取原始数据
        
        使用 query_history_k_data_plus() 获取日线数据
        
        流程：
        1. 检查是否为美股（不支持）
        2. 使用上下文管理器管理连接
        3. 转换股票代码格式
        4. 调用 API 查询数据
        5. 将结果转换为 DataFrame
        """
        # 美股不支持，抛出异常让 DataFetcherManager 切换到其他数据源
        if _is_us_code(stock_code):
            raise DataFetchError(f"BaostockFetcher 不支持美股 {stock_code}，请使用 AkshareFetcher 或 YfinanceFetcher")

        # 港股不支持，抛出异常让 DataFetcherManager 切换到其他数据源
        if _is_hk_market(stock_code):
            raise DataFetchError(f"BaostockFetcher 不支持港股 {stock_code}，请使用 AkshareFetcher")

        # 北交所不支持，抛出异常让 DataFetcherManager 切换到其他数据源
        if is_bse_code(stock_code):
            raise DataFetchError(
                f"BaostockFetcher 不支持北交所 {stock_code}，将自动切换其他数据源"
            )
        
        # 转换代码格式
        bs_code = self._convert_stock_code(stock_code)
        
        logger.debug(f"调用 Baostock query_history_k_data_plus({bs_code}, {start_date}, {end_date})")
        
        with self._baostock_session() as bs:
            try:
                # 查询日线数据
                # adjustflag: 1-后复权，2-前复权，3-不复权
                rs = bs.query_history_k_data_plus(
                    code=bs_code,

View on GitHub (pinned to 5159bd72e8)

Solutions

  1. Filter markets upstream so HK codes never enter the Baostock attempt.
  2. Treat this error as a skip signal in the manager loop, not a retryable failure.
  3. Keep HK codes prefixed 'hk' so _is_hk_market detects them reliably.

Example fix

# manager-style loop
for fetcher in fetchers:
    try:
        return fetcher.fetch(code, start, end)
    except DataFetchError as e:
        if '不支持' in str(e):
            continue  # market not supported here; try next source
        raise
Defensive patterns

Strategy: fallback

Validate before calling

from data_provider.baostock_fetcher import _is_hk_market
if _is_hk_market(code):
    skip_baostock = True  # route directly to Akshare

Try / catch

for fetcher in fetcher_chain:
    try:
        return fetcher.fetch(code, start, end)
    except DataFetchError as e:
        if '不支持' in str(e):
            continue  # market guard — try next source
        raise

Prevention

When it happens

Trigger: Calling BaostockFetcher.fetch with an HK market code ('hk00700', '00700') from a source chain that has not pre-filtered by market. Deterministic raise before login/query; zero network cost.

Common situations: HK watchlist entries routed through a default fetcher list; codes persisted in the DB in 'hkNNNNN' form hitting Baostock first during fallback iteration.

Related errors

AI-assisted analysis of ZhuLinsen/daily_stock_analysis@5159bd72e8 (2026-08-15). Data as JSON: /api/errors/7d7f4cb4307f1b37. Report an issue: GitHub.