[Mod]移除CryptoTrader对于操作系统的判断

examples/CoinapiDataService/dataService.py

@@ -51,8 +51,8 @@ def downMinuteBarBySymbol(symbol, period, start, end):
     """下载某一合约的分钟线数据"""
     startTime = time.time()
     
-    cl = db[symbol]                                                 # 集合
-    cl.ensure_index([('datetime', ASCENDING)], unique=True)         # 添加索引
+    cl = db[symbol]                                                 
+    cl.ensure_index([('datetime', ASCENDING)], unique=True)         
     
     startDt = datetime.datetime.strptime(start, '%Y%m%d')
     endDt = datetime.datetime.strptime(end, '%Y%m%d')

examples/CryptoTrader/run.py

@@ -9,10 +9,6 @@ import sys
 reload(sys)
 sys.setdefaultencoding('utf8')
 
-# 判断操作系统
-import platform
-system = platform.system()
-
 # vn.trader模块
 from vnpy.event import EventEngine
 from vnpy.trader.vtEngine import MainEngine