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# -*- coding: utf-8 -*-
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"""
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===================================
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数据源策略层 - 包初始化
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===================================
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本包实现策略模式管理多个数据源，实现：
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1. 统一的数据获取接口
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2. 自动故障切换
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3. 防封禁流控策略
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数据源优先级（动态调整）：
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【配置了 TUSHARE_TOKEN 时】
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1. TushareFetcher (Priority 0) - 🔥 最高优先级（动态提升）
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2. EfinanceFetcher (Priority 0) - 同优先级
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3. AkshareFetcher (Priority 1) - 来自 akshare 库
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4. PytdxFetcher (Priority 2) - 来自 pytdx 库（通达信）
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5. BaostockFetcher (Priority 3) - 来自 baostock 库
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6. YfinanceFetcher (Priority 4) - 来自 yfinance 库
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【未配置 TUSHARE_TOKEN 时】
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1. EfinanceFetcher (Priority 0) - 最高优先级，来自 efinance 库
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2. AkshareFetcher (Priority 1) - 来自 akshare 库
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3. PytdxFetcher (Priority 2) - 来自 pytdx 库（通达信）
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4. TushareFetcher (Priority 2) - 来自 tushare 库（不可用）
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5. BaostockFetcher (Priority 3) - 来自 baostock 库
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6. YfinanceFetcher (Priority 4) - 来自 yfinance 库
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提示：优先级数字越小越优先，同优先级按初始化顺序排列
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"""
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from .base import BaseFetcher, DataFetcherManager
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from .efinance_fetcher import EfinanceFetcher
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from .akshare_fetcher import AkshareFetcher
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from .tushare_fetcher import TushareFetcher
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from .pytdx_fetcher import PytdxFetcher
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from .baostock_fetcher import BaostockFetcher
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from .yfinance_fetcher import YfinanceFetcher
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__all__ = [
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'BaseFetcher',
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'DataFetcherManager',
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'EfinanceFetcher',
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'AkshareFetcher',
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'TushareFetcher',
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'PytdxFetcher',
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'BaostockFetcher',
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'YfinanceFetcher',
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]
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