feat: 修复报错

python-app/app/market/provider_base.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+from abc import ABC, abstractmethod
+from datetime import datetime
+
+import pandas as pd
+
+
+class MarketDataProvider(ABC):
+    @property
+    @abstractmethod
+    def provider_name(self) -> str:
+        raise NotImplementedError
+
+    @property
+    @abstractmethod
+    def channel(self) -> str:
+        raise NotImplementedError
+
+    @abstractmethod
+    def fetch_spot(self) -> pd.DataFrame:
+        raise NotImplementedError
+
+    @abstractmethod
+    def search_spot(self, query: str, limit: int) -> pd.DataFrame:
+        raise NotImplementedError
+
+    @abstractmethod
+    def fetch_daily_kline(self, code: str, start: datetime, end: datetime) -> pd.DataFrame:
+        raise NotImplementedError