What causes "{market_label} {stock_code} 获取失败: 暂无可用数据源" in ZhuLinsen/daily_stock_analysis?

Inspect manager.available_fetchers to see which sources are actually registered and alive.

ZhuLinsen/daily_stock_analysis · error · DataFetchError

{market_label} {stock_code} 获取失败: 暂无可用数据源

Error message

{market_label} {stock_code} 获取失败:
暂无可用数据源

What it means

Raised by DataFetcherManager before any network call: after market detection (us/hk/jp/kr/tw/cn) and capability filtering ('daily_data'), zero fetchers remain. This is a configuration/availability failure, not a network failure — the failover loop never starts.

Source

Thrown at data_provider/base.py:1304

        #   - 未配置长桥:     YFinance 为首选（美股）, 通用 fetcher 循环（港股）
        #   - 美股指数:       始终 YFinance 为首选（Longbridge 不提供指数K线）
        is_us_index = is_us_index_code(stock_code)
        is_us = is_us_index or is_us_stock_code(stock_code)
        is_hk = (not is_us) and _is_hk_market(stock_code)
        is_jp = (not is_us) and (not is_hk) and _is_jp_market(stock_code)
        is_kr = (not is_us) and (not is_hk) and _is_kr_market(stock_code)
        is_tw = (not is_us) and (not is_hk) and _is_tw_market(stock_code)
        market = "us" if is_us else "hk" if is_hk else "jp" if is_jp else "kr" if is_kr else "tw" if is_tw else "cn"
        if market != "cn":
            fetchers = self._filter_daily_fetchers_for_market(fetchers, market)
        fetchers = self._filter_fetchers_by_capability(fetchers, capability="daily_data")
        total_fetchers = len(fetchers)

        if total_fetchers == 0:
            market_label = "美股指数" if is_us_index else "美股" if is_us else "港股" if is_hk else "台股" if is_tw else "A股"
            error_summary = f"{market_label} {stock_code} 获取失败:\n暂无可用数据源"
            logger.error(f"[数据源终止] {stock_code} 获取失败: {error_summary}")
            raise DataFetchError(error_summary)

        # 美股（含美股指数）使用专用路由；港股走下方通用数据源循环
        # Failover chain: Finnhub(P2) -> AlphaVantage(P3) -> Yfinance(P4) -> Longbridge(P5)
        # When Longbridge preferred: Longbridge -> Finnhub -> AlphaVantage -> Yfinance
        if is_us:
            prefer_lb = self._longbridge_preferred(capability="daily_data") and not is_us_index
            if is_us_index:
                # 指数始终 YFinance 首选（Longbridge 不提供指数K线）
                source_order = ["YfinanceFetcher", "FinnhubFetcher"]
            elif prefer_lb:
                source_order = ["LongbridgeFetcher", "FinnhubFetcher", "AlphaVantageFetcher", "YfinanceFetcher"]
            else:
                source_order = ["FinnhubFetcher", "AlphaVantageFetcher", "YfinanceFetcher", "LongbridgeFetcher"]
            market_label = "美股指数" if is_us_index else "美股"

            for order_index, src_name in enumerate(source_order):
                fallback_to = (
                    source_order[order_index + 1]

View on GitHub (pinned to 5159bd72e8)

Solutions

Inspect manager.available_fetchers to see which sources are actually registered and alive.
Enable/configure at least one data source that covers the failing market and declares the daily_data capability (e.g. YfinanceFetcher for US/JP/KR/TW, AkShare for A-share/HK).
If you added a custom fetcher, make sure its capability list includes 'daily_data' and it passes the market filter for the requested code.

Example fix

# before: run headless with no keys -> 美股 AAPL 获取失败: 暂无可用数据源
# after: .env
YFINANCE_ENABLED=true  # or provide FINNHUB_API_KEY=...

Defensive patterns

Strategy: validation

Validate before calling

names = manager.available_fetchers
if not names:
    raise SystemExit('no data sources configured — check .env / API keys')

Try / catch

try:
    df = manager.get_daily_data(code, ...)
except DataFetchError as e:
    if '暂无可用数据源' in str(e):
        # configuration problem, fail fast — retrying is pointless
        raise

Prevention

At startup, assert available_fetchers is non-empty and covers every market in your watchlist.
Wire required API keys in .env / CI secrets and keep .env.example in sync.
When adding a market (JP/KR/TW), first verify at least one fetcher declares daily_data for it.

When it happens

Trigger: get_daily_data on a market whose fetchers were all removed by _filter_daily_fetchers_for_market or _filter_fetchers_by_capability, e.g. a JP/KR/TW market where no fetcher supports daily_data, or all configured sources are disabled/unavailable.

Common situations: Running with a minimal .env (no API keys) so fetchers self-disable; adding a new market (JP/KR/TW) without a capable fetcher; capability metadata on a custom fetcher missing 'daily_data'.

Related errors

AI-assisted analysis of ZhuLinsen/daily_stock_analysis@5159bd72e8 (2026-08-15). Data as JSON: /api/errors/fd9e95feeefcd59c. Report an issue: GitHub.