From fe3b16c1b279e3566cada5ef566c286fb6ab2f6f Mon Sep 17 00:00:00 2001
From: "vn.py" <vn.py@foxmail.com>
Date: Tue, 25 Sep 2018 10:35:46 +0800
Subject: [PATCH] =?UTF-8?q?[Add]=E6=B7=BB=E5=8A=A0VtBarData=E7=9A=84K?=
 =?UTF-8?q?=E7=BA=BF=E5=91=A8=E6=9C=9F=E5=AD=97=E6=AE=B5?=
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---
 vnpy/trader/vtObject.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/vnpy/trader/vtObject.py b/vnpy/trader/vtObject.py
index 966be5fe..d7a1d384 100644
--- a/vnpy/trader/vtObject.py
+++ b/vnpy/trader/vtObject.py
@@ -99,7 +99,8 @@ class VtBarData(VtBaseData):
         self.datetime = None                # python的datetime时间对象
         
         self.volume = EMPTY_INT             # 成交量
-        self.openInterest = EMPTY_INT       # 持仓量    
+        self.openInterest = EMPTY_INT       # 持仓量  
+        self.interval = EMPTY_UNICODE       # K线周期
     
 
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