CTA引擎处理行情tick时，增加对异常数据的捕捉和过滤

examples/VnTrader/CTP_connect.json

@@ -2,6 +2,6 @@
     "brokerID": "9999", 
     "mdAddress": "tcp://180.168.146.187:10011", 
     "tdAddress": "tcp://180.168.146.187:10001", 
-    "userID": "000300",
-    "password": "19890624"    
+    "userID": "simnow申请",
+    "password": "simnow申请"    
 }

vnpy/trader/app/ctaStrategy/ctaEngine.py

@@ -254,9 +254,14 @@ class CtaEngine(object):
         
         # 推送tick到对应的策略实例进行处理
         if tick.vtSymbol in self.tickStrategyDict:
-            # 添加datetime字段
-            if not tick.datetime:
-                tick.datetime = datetime.strptime(' '.join([tick.date, tick.time]), '%Y%m%d %H:%M:%S.%f')
+            # tick时间可能出现异常数据，使用try...except实现捕捉和过滤
+            try:
+                # 添加datetime字段
+                if not tick.datetime:
+                    tick.datetime = datetime.strptime(' '.join([tick.date, tick.time]), '%Y%m%d %H:%M:%S.%f')
+            except ValueError:
+                self.writeCtaLog(traceback.format_exc())
+                return
                 
             # 逐个推送到策略实例中
             l = self.tickStrategyDict[tick.vtSymbol]