Add FinancialDataProvider abstract class

Author: paty-oliveira

requirements.txt

@@ -1,3 +1,4 @@
 streamlit
 pytest
 streamlit-extras
+pandas

src/data_providers/FinancialDataProvider.py

@@ -0,0 +1,28 @@
+from abc import ABC, abstractmethod
+
+import pandas as pd
+
+
+class FinancialDataProvider(ABC):
+    def __init__(self, ticker: str):
+        self.ticker = ticker
+
+    @abstractmethod
+    def get_historical_data(self, period: str, interval: str) -> pd.DataFrame:
+        pass
+
+    @abstractmethod
+    def get_stock_info(self):
+        pass
+
+    @abstractmethod
+    def get_balance_sheet(self):
+        pass
+
+    @abstractmethod
+    def get_income_statement(self):
+        pass
+
+    @abstractmethod
+    def get_cash_flow(self):
+        pass