添加web api调用示例

src/example_trade.py

@@ -1,7 +1,7 @@
 import requests
 
 # 服务器地址
-URL = "http://localhost:9527/yu"
+URL = "http://trader.biggerfish.tech:9527/yu"
 
 def buy(code: str, price: float, amount: int) -> dict:
     """买入股票
@@ -41,6 +41,7 @@ def sell(code: str, price: float, amount: int) -> dict:
     response = requests.post(f"{URL}/sell", json=data)
     return response.json()
 
+
 if __name__ == "__main__":
     # 示例：买入中国银行1000股，价格3.45
     result = buy("601988.SH", 3.45, 1000)
@@ -48,4 +49,5 @@ if __name__ == "__main__":
     
     # 示例：卖出中国银行1000股，价格3.48
     result = sell("601988.SH", 3.48, 1000)
-    print("卖出结果:", result) 
+    print("卖出结果:", result)
+