Begin implementing pydantic validation for OANDA

core/exchanges/alpaca.py

@@ -57,7 +57,7 @@ class AlpacaExchange(BaseExchange):
 
         return (True, balance)
 
-    def get_market_value(self, symbol):
+    def get_market_value(self, symbol):  # TODO: pydantic
         try:
             position = self.client.get_position(symbol)
         except APIError as e:
@@ -65,7 +65,7 @@ class AlpacaExchange(BaseExchange):
             return False
         return float(position["market_value"])
 
-    def post_trade(self, trade):
+    def post_trade(self, trade):  # TODO: pydantic
         # the trade is not placed yet
         if trade.direction == "buy":
             direction = OrderSide.BUY