diff --git a/vnpy/trader/ctaStrategy/ctaBacktesting.py b/vnpy/trader/ctaStrategy/ctaBacktesting.py
index 80552a10..5b67f875 100644
--- a/vnpy/trader/ctaStrategy/ctaBacktesting.py
+++ b/vnpy/trader/ctaStrategy/ctaBacktesting.py
@@ -13,10 +13,11 @@ import multiprocessing
 import pymongo
 
 from vnpy.trader.vtGlobal import globalSetting
-from ctaBase import *
 from vnpy.trader.vtConstant import *
 from vnpy.trader.vtGateway import VtOrderData, VtTradeData
 
+from vnpy.trader.ctaStrategy.ctaBase import *
+
 
 ########################################################################
 class BacktestingEngine(object):
diff --git a/vnpy/trader/ctaStrategy/ctaBase.py b/vnpy/trader/ctaStrategy/ctaBase.py
index 981071b2..f00a8374 100644
--- a/vnpy/trader/ctaStrategy/ctaBase.py
+++ b/vnpy/trader/ctaStrategy/ctaBase.py
@@ -6,12 +6,6 @@
 
 from __future__ import division
 
-
-# 把vn.trader根目录添加到python环境变量中
-import sys
-sys.path.append('..')
-
-
 # 常量定义
 # CTA引擎中涉及到的交易方向类型
 CTAORDER_BUY = u'买开'
diff --git a/vnpy/trader/ctaStrategy/ctaEngine.py b/vnpy/trader/ctaStrategy/ctaEngine.py
index addd3101..fb244eec 100644
--- a/vnpy/trader/ctaStrategy/ctaEngine.py
+++ b/vnpy/trader/ctaStrategy/ctaEngine.py
@@ -24,13 +24,14 @@ import traceback
 from collections import OrderedDict
 from datetime import datetime, timedelta
 
-from ctaBase import *
-from strategy import STRATEGY_CLASS
-from vnpy.event import *
+from vnpy.event import Event
 from vnpy.trader.vtEvent import *
-from vtConstant import *
-from vtGateway import VtSubscribeReq, VtOrderReq, VtCancelOrderReq, VtLogData
-from vtFunction import todayDate
+from vnpy.trader.vtConstant import *
+from vnpy.trader.vtGateway import VtSubscribeReq, VtOrderReq, VtCancelOrderReq, VtLogData
+from vnpy.trader.vtFunction import todayDate
+
+from vnpy.trader.ctaStrategy.ctaBase import *
+from vnpy.trader.ctaStrategy.strategy import STRATEGY_CLASS
 
 
 ########################################################################
diff --git a/vnpy/trader/ctaStrategy/ctaHistoryData.py b/vnpy/trader/ctaStrategy/ctaHistoryData.py
index 461575af..5e478159 100644
--- a/vnpy/trader/ctaStrategy/ctaHistoryData.py
+++ b/vnpy/trader/ctaStrategy/ctaHistoryData.py
@@ -8,14 +8,16 @@
 """
 
 from datetime import datetime, timedelta
-import pymongo
 from time import time
 from multiprocessing.pool import ThreadPool
 
+import pymongo
+
 from vnpy.trader.vtGlobal import globalSetting
-from ctaBase import *
-from vtConstant import *
-from datayesClient import DatayesClient
+from vnpy.trader.vtConstant import *
+
+from vnpy.trader.ctaStrategy.ctaBase import *
+from vnpy.trader.ctaStrategy.datayesClient import DatayesClient
 
 
 # 以下为vn.trader和通联数据规定的交易所代码映射 
diff --git a/vnpy/trader/ctaStrategy/ctaTemplate.py b/vnpy/trader/ctaStrategy/ctaTemplate.py
index dd2b1adc..40114f66 100644
--- a/vnpy/trader/ctaStrategy/ctaTemplate.py
+++ b/vnpy/trader/ctaStrategy/ctaTemplate.py
@@ -4,9 +4,9 @@
 本文件包含了CTA引擎中的策略开发用模板，开发策略时需要继承CtaTemplate类。
 '''
 
-from ctaBase import *
 from vnpy.trader.vtConstant import *
 
+from vnpy.trader.ctaStrategy.ctaBase import *
 
 ########################################################################
 class CtaTemplate(object):
diff --git a/vnpy/trader/ctaStrategy/strategy/strategyAtrRsi.py b/vnpy/trader/ctaStrategy/strategy/strategyAtrRsi.py
index b9080b34..a81bc28d 100644
--- a/vnpy/trader/ctaStrategy/strategy/strategyAtrRsi.py
+++ b/vnpy/trader/ctaStrategy/strategy/strategyAtrRsi.py
@@ -239,7 +239,7 @@ class AtrRsiStrategy(CtaTemplate):
 if __name__ == '__main__':
     # 提供直接双击回测的功能
     # 导入PyQt4的包是为了保证matplotlib使用PyQt4而不是PySide，防止初始化出错
-    from ctaBacktesting import *
+    from vnpy.trader.ctaStrategy.ctaBacktesting import *
     from PyQt4 import QtCore, QtGui
     
     # 创建回测引擎
diff --git a/vnpy/trader/ctaStrategy/uiCtaWidget.py b/vnpy/trader/ctaStrategy/uiCtaWidget.py
index 0964c857..8032aff6 100644
--- a/vnpy/trader/ctaStrategy/uiCtaWidget.py
+++ b/vnpy/trader/ctaStrategy/uiCtaWidget.py
@@ -6,8 +6,9 @@ CTA模块相关的GUI控制组件
 
 
 from vnpy.event import Event
-from uiBasicWidget import QtGui, QtCore, QtWidgets, BasicCell
-from language import text
+from vnpy.trader.uiBasicWidget import QtGui, QtCore, QtWidgets, BasicCell
+
+from vnpy.trader.ctaStrategy.language import text
 
 
 ########################################################################
diff --git a/vnpy/trader/dataRecorder/drBase.py b/vnpy/trader/dataRecorder/drBase.py
index 85581d96..697bdfcf 100644
--- a/vnpy/trader/dataRecorder/drBase.py
+++ b/vnpy/trader/dataRecorder/drBase.py
@@ -20,7 +20,7 @@ MINUTE_DB_NAME = 'VnTrader_1Min_Db'
 
 
 # CTA引擎中涉及的数据类定义
-from vtConstant import EMPTY_UNICODE, EMPTY_STRING, EMPTY_FLOAT, EMPTY_INT
+from vnpy.trader.vtConstant import EMPTY_UNICODE, EMPTY_STRING, EMPTY_FLOAT, EMPTY_INT
 
 
 ########################################################################
diff --git a/vnpy/trader/dataRecorder/drEngine.py b/vnpy/trader/dataRecorder/drEngine.py
index 30a2b5dd..7fa89fcf 100644
--- a/vnpy/trader/dataRecorder/drEngine.py
+++ b/vnpy/trader/dataRecorder/drEngine.py
@@ -14,12 +14,13 @@ from datetime import datetime, timedelta
 from Queue import Queue
 from threading import Thread
 
-from vnpy.event import *
+from vnpy.event import Event
 from vnpy.trader.vtEvent import *
-from vtGateway import VtSubscribeReq, VtLogData
-from drBase import *
-from vtFunction import todayDate
-from language import text
+from vnpy.trader.vtFunction import todayDate
+from vnpy.trader.vtGateway import VtSubscribeReq, VtLogData
+
+from vnpy.trader.dataRecorder.drBase import *
+from vnpy.trader.dataRecorder.language import text
 
 
 ########################################################################
diff --git a/vnpy/trader/dataRecorder/uiDrWidget.py b/vnpy/trader/dataRecorder/uiDrWidget.py
index fbbcc202..114d7ea9 100644
--- a/vnpy/trader/dataRecorder/uiDrWidget.py
+++ b/vnpy/trader/dataRecorder/uiDrWidget.py
@@ -6,9 +6,9 @@
 
 import json
 
-from uiBasicWidget import QtWidgets, QtGui, QtCore
-from vnpy.event import *
-from language import text
+from vnpy.event import Event
+from vnpy.trader.uiBasicWidget import QtWidgets, QtGui, QtCore
+from vnpy.trader.dataRecorder.language import text
 
 
 ########################################################################
diff --git a/vnpy/trader/gateway/cshshlpGateway/__init__.py b/vnpy/trader/gateway/cshshlpGateway/__init__.py
index c65bbbd4..f61aa8e9 100644
--- a/vnpy/trader/gateway/cshshlpGateway/__init__.py
+++ b/vnpy/trader/gateway/cshshlpGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from cshshlpGateway import CshshlpGateway as gateway
 
 gatewayName = 'CSHSHLP'
diff --git a/vnpy/trader/gateway/ctpGateway/__init__.py b/vnpy/trader/gateway/ctpGateway/__init__.py
index 79b58adf..7611d3ce 100644
--- a/vnpy/trader/gateway/ctpGateway/__init__.py
+++ b/vnpy/trader/gateway/ctpGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from ctpGateway import CtpGateway as gateway
 
 gatewayName = 'CTP'
diff --git a/vnpy/trader/gateway/ctpGateway/ctpGateway.py b/vnpy/trader/gateway/ctpGateway/ctpGateway.py
index e3d580e2..55aa86c3 100644
--- a/vnpy/trader/gateway/ctpGateway/ctpGateway.py
+++ b/vnpy/trader/gateway/ctpGateway/ctpGateway.py
@@ -15,7 +15,7 @@ from datetime import datetime
 
 from vnpy.api.ctp import MdApi, TdApi, defineDict
 from vnpy.trader.vtGateway import *
-from language import text
+from vnpy.trader.gateway.ctpGateway.language import text
 
 
 # 以下为一些VT类型和CTP类型的映射字典
@@ -1458,29 +1458,3 @@ class CtpTdApi(TdApi):
         log.gatewayName = self.gatewayName
         log.logContent = content
         self.gateway.onLog(log)        
-
-
-#----------------------------------------------------------------------
-def test():
-    """测试"""
-    from PyQt4 import QtCore
-    import sys
-    
-    def print_log(event):
-        log = event.dict_['data']
-        print ':'.join([log.logTime, log.logContent])
-    
-    app = QtCore.QCoreApplication(sys.argv)    
-
-    eventEngine = EventEngine()
-    eventEngine.register(EVENT_LOG, print_log)
-    eventEngine.start()
-    
-    gateway = CtpGateway(eventEngine)
-    gateway.connect()
-    
-    sys.exit(app.exec_())
-
-
-if __name__ == '__main__':
-    test()
\ No newline at end of file
diff --git a/vnpy/trader/gateway/femasGateway/__init__.py b/vnpy/trader/gateway/femasGateway/__init__.py
index 2a6b12c8..7667deba 100644
--- a/vnpy/trader/gateway/femasGateway/__init__.py
+++ b/vnpy/trader/gateway/femasGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from femasGateway import FemasGateway as gateway
 
 gatewayName = 'FEMAS'
diff --git a/vnpy/trader/gateway/femasGateway/femasGateway.py b/vnpy/trader/gateway/femasGateway/femasGateway.py
index 8b9c35cb..f5fdcbc3 100644
--- a/vnpy/trader/gateway/femasGateway/femasGateway.py
+++ b/vnpy/trader/gateway/femasGateway/femasGateway.py
@@ -11,7 +11,7 @@ import os
 import json
 
 from vnpy.api.femas import MdApi, TdApi, defineDict
-from vtGateway import *
+from vnpy.trader.vtGateway import *
 
 # 以下为一些VT类型和CTP类型的映射字典
 # 价格类型映射
@@ -947,35 +947,4 @@ class FemasTdApi(TdApi):
     #----------------------------------------------------------------------
     def onRspQryInvestorMargin(self, data, error, n, last):
         """"""
-        pass
-    
-
-#----------------------------------------------------------------------
-def test():
-    """测试"""
-    from PyQt4 import QtCore
-    import sys
-    
-    def print_log(event):
-        log = event.dict_['data']
-        print ':'.join([log.logTime, log.logContent])
-    
-    app = QtCore.QCoreApplication(sys.argv)    
-
-    eventEngine = EventEngine()
-    eventEngine.register(EVENT_LOG, print_log)
-    eventEngine.start()
-    
-    gateway = FemasGateway(eventEngine)
-    gateway.connect()
-    
-    sys.exit(app.exec_())
-
-#----------------------------------------------------------------------
-def generateStrLocalID(localID):
-    """把整数的本地委托号转化为字符串"""
-    return str(localID).rjust(12, '0')
-
-
-if __name__ == '__main__':
-    test()
\ No newline at end of file
+        pass
\ No newline at end of file
diff --git a/vnpy/trader/gateway/huobiGateway/__init__.py b/vnpy/trader/gateway/huobiGateway/__init__.py
index 2876dbfa..72f61805 100644
--- a/vnpy/trader/gateway/huobiGateway/__init__.py
+++ b/vnpy/trader/gateway/huobiGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from huobiGateway import HuobiGateway as gateway
 
 gatewayName = 'HUOBI'
diff --git a/vnpy/trader/gateway/huobiGateway/huobiGateway.py b/vnpy/trader/gateway/huobiGateway/huobiGateway.py
index 878ec54b..d84fee10 100644
--- a/vnpy/trader/gateway/huobiGateway/huobiGateway.py
+++ b/vnpy/trader/gateway/huobiGateway/huobiGateway.py
@@ -14,7 +14,7 @@ from Queue import Queue
 from threading import Thread
 
 from vnpy.api.huobi import vnhuobi
-from vtGateway import *
+from vnpy.trader.vtGateway import *
 
 
 SYMBOL_BTCCNY = 'BTCCNY'
diff --git a/vnpy/trader/gateway/ibGateway/__init__.py b/vnpy/trader/gateway/ibGateway/__init__.py
index 446a4dea..a30f33cf 100644
--- a/vnpy/trader/gateway/ibGateway/__init__.py
+++ b/vnpy/trader/gateway/ibGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from ibGateway import IbGateway as gateway
 
 gatewayName = 'IB'
diff --git a/vnpy/trader/gateway/ibGateway/ibGateway.py b/vnpy/trader/gateway/ibGateway/ibGateway.py
index 0dbb59b1..880768b0 100644
--- a/vnpy/trader/gateway/ibGateway/ibGateway.py
+++ b/vnpy/trader/gateway/ibGateway/ibGateway.py
@@ -18,8 +18,8 @@ from datetime import datetime, timedelta
 from copy import copy
 
 from vnpy.api.ib import *
-from vtGateway import *
-from language import text
+from vnpy.trader.vtGateway import *
+from vnpy.trader.gateway.ibGateway.language import text
 
 
 # 以下为一些VT类型和CTP类型的映射字典
diff --git a/vnpy/trader/gateway/ksgoldGateway/__init__.py b/vnpy/trader/gateway/ksgoldGateway/__init__.py
index 05889e8a..3d2cfeca 100644
--- a/vnpy/trader/gateway/ksgoldGateway/__init__.py
+++ b/vnpy/trader/gateway/ksgoldGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from ksgoldGateway import KsgoldGateway as gateway
 
 gatewayName = 'KSGOLD'
diff --git a/vnpy/trader/gateway/ksgoldGateway/ksgoldGateway.py b/vnpy/trader/gateway/ksgoldGateway/ksgoldGateway.py
index b245b0c6..80f22f91 100644
--- a/vnpy/trader/gateway/ksgoldGateway/ksgoldGateway.py
+++ b/vnpy/trader/gateway/ksgoldGateway/ksgoldGateway.py
@@ -12,7 +12,7 @@ import json
 import time
 
 from vnpy.api.ksgold import TdApi, defineDict
-from vtGateway import *
+from vnpy.trader.vtGateway import *
 
 # 以下类型映射参考的是原生API里的Constant.h
 
diff --git a/vnpy/trader/gateway/ksotpGateway/__init__.py b/vnpy/trader/gateway/ksotpGateway/__init__.py
index 7d7f8e6c..1997ecdb 100644
--- a/vnpy/trader/gateway/ksotpGateway/__init__.py
+++ b/vnpy/trader/gateway/ksotpGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from ksotpGateway import KsotpGateway as gateway
 
 gatewayName = 'KSOTP'
diff --git a/vnpy/trader/gateway/ksotpGateway/ksotpGateway.py b/vnpy/trader/gateway/ksotpGateway/ksotpGateway.py
index e90c5a63..eca058de 100644
--- a/vnpy/trader/gateway/ksotpGateway/ksotpGateway.py
+++ b/vnpy/trader/gateway/ksotpGateway/ksotpGateway.py
@@ -9,7 +9,7 @@ import os
 import json
 
 from vnpy.api.ksotp import MdApi, TdApi, defineDict
-from vtGateway import *
+from vnpy.trader.vtGateway import *
 
 # 以下为一些VT类型和CTP类型的映射字典
 # 价格类型映射
@@ -1810,32 +1810,3 @@ class KsotpTdApi(TdApi):
         """"""
         pass
             
-    
-        
-    
-
-
-#----------------------------------------------------------------------
-def test():
-    """测试"""
-    from PyQt4 import QtCore
-    import sys
-    
-    def print_log(event):
-        log = event.dict_['data']
-        print ':'.join([log.logTime, log.logContent])
-    
-    app = QtCore.QCoreApplication(sys.argv)    
-
-    eventEngine = EventEngine()
-    eventEngine.register(EVENT_LOG, print_log)
-    eventEngine.start()
-    
-    gateway = KsotpGateway(eventEngine)
-    gateway.connect()
-    
-    sys.exit(app.exec_())
-
-
-if __name__ == '__main__':
-    test()
\ No newline at end of file
diff --git a/vnpy/trader/gateway/lhangGateway/__init__.py b/vnpy/trader/gateway/lhangGateway/__init__.py
index 2c73b60e..f7e46d31 100644
--- a/vnpy/trader/gateway/lhangGateway/__init__.py
+++ b/vnpy/trader/gateway/lhangGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from lhangGateway import LhangGateway as gateway
 
 gatewayName = 'LHANG'
diff --git a/vnpy/trader/gateway/lhangGateway/lhangGateway.py b/vnpy/trader/gateway/lhangGateway/lhangGateway.py
index 18bf1d90..d8d250b8 100644
--- a/vnpy/trader/gateway/lhangGateway/lhangGateway.py
+++ b/vnpy/trader/gateway/lhangGateway/lhangGateway.py
@@ -11,7 +11,7 @@ from datetime import datetime
 from time import sleep
 
 from vnpy.api.lhang import LhangApi
-from vtGateway import *
+from vnpy.trader.vtGateway import *
 
 
 SYMBOL_BTCCNY = 'BTCCNY'
diff --git a/vnpy/trader/gateway/ltsGateway/__init__.py b/vnpy/trader/gateway/ltsGateway/__init__.py
index a641bea7..78a0ad1f 100644
--- a/vnpy/trader/gateway/ltsGateway/__init__.py
+++ b/vnpy/trader/gateway/ltsGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from ltsGateway import LtsGateway as gateway
 
 gatewayName = 'LTS'
diff --git a/vnpy/trader/gateway/ltsGateway/ltsGateway.py b/vnpy/trader/gateway/ltsGateway/ltsGateway.py
index d1f2953c..89882951 100644
--- a/vnpy/trader/gateway/ltsGateway/ltsGateway.py
+++ b/vnpy/trader/gateway/ltsGateway/ltsGateway.py
@@ -8,7 +8,7 @@ import os
 import json
 
 from vnpy.api.lts import MdApi, QryApi, TdApi, defineDict
-from vtGateway import *
+from vnpy.trader.vtGateway import *
 
 
 # 以下为一些VT类型和LTS类型的映射字典
diff --git a/vnpy/trader/gateway/oandaGateway/__init__.py b/vnpy/trader/gateway/oandaGateway/__init__.py
index 930fa53e..f1b72302 100644
--- a/vnpy/trader/gateway/oandaGateway/__init__.py
+++ b/vnpy/trader/gateway/oandaGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from oandaGateway import OandaGateway as gateway
 
 gatewayName = 'OANDA'
diff --git a/vnpy/trader/gateway/oandaGateway/oandaGateway.py b/vnpy/trader/gateway/oandaGateway/oandaGateway.py
index 03bc35c9..f4e52bac 100644
--- a/vnpy/trader/gateway/oandaGateway/oandaGateway.py
+++ b/vnpy/trader/gateway/oandaGateway/oandaGateway.py
@@ -25,7 +25,7 @@ import json
 import datetime
 
 from vnpy.api.oanda import OandaApi
-from vtGateway import *
+from vnpy.trader.vtGateway import *
 
 # 价格类型映射
 priceTypeMap = {}
diff --git a/vnpy/trader/gateway/okcoinGateway/__init__.py b/vnpy/trader/gateway/okcoinGateway/__init__.py
index 5d907ab7..b3cc11ce 100644
--- a/vnpy/trader/gateway/okcoinGateway/__init__.py
+++ b/vnpy/trader/gateway/okcoinGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from okcoinGateway import OkcoinGateway as gateway
 
 gatewayName = 'OKCOIN'
diff --git a/vnpy/trader/gateway/okcoinGateway/okcoinGateway.py b/vnpy/trader/gateway/okcoinGateway/okcoinGateway.py
index 47da399c..2791c49f 100644
--- a/vnpy/trader/gateway/okcoinGateway/okcoinGateway.py
+++ b/vnpy/trader/gateway/okcoinGateway/okcoinGateway.py
@@ -17,7 +17,7 @@ from Queue import Queue
 from threading import Thread
 
 from vnpy.api.okcoin import vnokcoin
-from vtGateway import *
+from vnpy.trader.vtGateway import *
 
 # 价格类型映射
 priceTypeMap = {}
diff --git a/vnpy/trader/gateway/qdpGateway/__init__.py b/vnpy/trader/gateway/qdpGateway/__init__.py
index 87b2373b..39634486 100644
--- a/vnpy/trader/gateway/qdpGateway/__init__.py
+++ b/vnpy/trader/gateway/qdpGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from qdpGateway import QdpGateway as gateway
 
 gatewayName = 'QDP'
diff --git a/vnpy/trader/gateway/qdpGateway/qdpGateway.py b/vnpy/trader/gateway/qdpGateway/qdpGateway.py
index 6ee3086f..fe00f708 100644
--- a/vnpy/trader/gateway/qdpGateway/qdpGateway.py
+++ b/vnpy/trader/gateway/qdpGateway/qdpGateway.py
@@ -14,7 +14,7 @@ import datetime
 from copy import copy
 
 from vnpy.api.qdp import MdApi, TdApi, defineDict
-from vtGateway import *
+from vnpy.trader.vtGateway import *
 
 
 # 以下为一些VT类型和QDP类型的映射字典
diff --git a/vnpy/trader/gateway/sgitGateway/__init__.py b/vnpy/trader/gateway/sgitGateway/__init__.py
index 33711d21..ec447058 100644
--- a/vnpy/trader/gateway/sgitGateway/__init__.py
+++ b/vnpy/trader/gateway/sgitGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from sgitGateway import SgitGateway as gateway
 
 gatewayName = 'SGIT'
diff --git a/vnpy/trader/gateway/sgitGateway/sgitGateway.py b/vnpy/trader/gateway/sgitGateway/sgitGateway.py
index 248467d4..35129f74 100644
--- a/vnpy/trader/gateway/sgitGateway/sgitGateway.py
+++ b/vnpy/trader/gateway/sgitGateway/sgitGateway.py
@@ -14,7 +14,7 @@ from copy import copy
 from datetime import datetime
 
 from vnpy.api.sgit import MdApi, TdApi, defineDict
-from vtGateway import *
+from vnpy.trader.vtGateway import *
 
 
 # 以下为一些VT类型和SGIT类型的映射字典
@@ -1410,30 +1410,4 @@ class PositionBuffer(object):
     #----------------------------------------------------------------------
     def getPos(self):
         """获取当前的持仓数据"""
-        return copy(self.pos)
-
-
-#----------------------------------------------------------------------
-def test():
-    """测试"""
-    from PyQt4 import QtCore
-    import sys
-    
-    def print_log(event):
-        log = event.dict_['data']
-        print ':'.join([log.logTime, log.logContent])
-    
-    app = QtCore.QCoreApplication(sys.argv)    
-
-    eventEngine = EventEngine()
-    eventEngine.register(EVENT_LOG, print_log)
-    eventEngine.start()
-    
-    gateway = SgitGateway(eventEngine)
-    gateway.connect()
-    
-    sys.exit(app.exec_())
-
-
-if __name__ == '__main__':
-    test()
\ No newline at end of file
+        return copy(self.pos)
\ No newline at end of file
diff --git a/vnpy/trader/gateway/shzdGateway/__init__.py b/vnpy/trader/gateway/shzdGateway/__init__.py
index d4f2d684..6650ba8c 100644
--- a/vnpy/trader/gateway/shzdGateway/__init__.py
+++ b/vnpy/trader/gateway/shzdGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from shzdGateway import ShzdGateway as gateway
 
 gatewayName = 'SHZD'
diff --git a/vnpy/trader/gateway/shzdGateway/shzdGateway.py b/vnpy/trader/gateway/shzdGateway/shzdGateway.py
index 8649fb69..02b22041 100644
--- a/vnpy/trader/gateway/shzdGateway/shzdGateway.py
+++ b/vnpy/trader/gateway/shzdGateway/shzdGateway.py
@@ -16,7 +16,7 @@ from copy import copy
 from datetime import datetime
 
 from vnpy.api.shzd import ShzdApi
-from vtGateway import *
+from vnpy.trader.vtGateway import *
 
 
 # 以下为一些VT类型和SHZD类型的映射字典
diff --git a/vnpy/trader/gateway/windGateway/__init__.py b/vnpy/trader/gateway/windGateway/__init__.py
index 359d510a..550df75a 100644
--- a/vnpy/trader/gateway/windGateway/__init__.py
+++ b/vnpy/trader/gateway/windGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from windGateway import WindGateway as gateway
 
 gatewayName = 'WIND'
diff --git a/vnpy/trader/gateway/windGateway/windGateway.py b/vnpy/trader/gateway/windGateway/windGateway.py
index 53d90653..30c5d4bd 100644
--- a/vnpy/trader/gateway/windGateway/windGateway.py
+++ b/vnpy/trader/gateway/windGateway/windGateway.py
@@ -11,7 +11,7 @@ try:
 except ImportError:
     print u'请先安装WindPy接口'
 
-from vtGateway import *
+from vnpy.trader.vtGateway import *
 
 # 交易所类型映射
 exchangeMap = {}
diff --git a/vnpy/trader/gateway/xspeedGateway/__init__.py b/vnpy/trader/gateway/xspeedGateway/__init__.py
index a5e55506..3443792a 100644
--- a/vnpy/trader/gateway/xspeedGateway/__init__.py
+++ b/vnpy/trader/gateway/xspeedGateway/__init__.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-import vtConstant
+from vnpy.trader import vtConstant
 from xspeedGateway import XspeedGateway as gateway
 
 gatewayName = 'XSPEED'
diff --git a/vnpy/trader/gateway/xspeedGateway/xspeedGateway.py b/vnpy/trader/gateway/xspeedGateway/xspeedGateway.py
index 65ea4307..ae913eab 100644
--- a/vnpy/trader/gateway/xspeedGateway/xspeedGateway.py
+++ b/vnpy/trader/gateway/xspeedGateway/xspeedGateway.py
@@ -10,7 +10,7 @@ import time
 from copy import copy
 
 from vnpy.api.xspeed import MdApi, TdApi, defineDict
-from vtGateway import *
+from vnpy.trader.vtGateway import *
 
 # 以下为一些VT类型和XSPEED类型的映射字典
 # 价格类型映射
diff --git a/vnpy/trader/riskManager/rmEngine.py b/vnpy/trader/riskManager/rmEngine.py
index a2441931..3f5fd118 100644
--- a/vnpy/trader/riskManager/rmEngine.py
+++ b/vnpy/trader/riskManager/rmEngine.py
@@ -11,10 +11,10 @@ import json
 import os
 import platform
 
-from vnpy.event import *
+from vnpy.event import Event
 from vnpy.trader.vtEvent import *
-from vtConstant import *
-from vtGateway import VtLogData
+from vnpy.trader.vtConstant import *
+from vnpy.trader.vtGateway import VtLogData
 
 
 ########################################################################
diff --git a/vnpy/trader/riskManager/uiRmWidget.py b/vnpy/trader/riskManager/uiRmWidget.py
index ade41c09..c10559e0 100644
--- a/vnpy/trader/riskManager/uiRmWidget.py
+++ b/vnpy/trader/riskManager/uiRmWidget.py
@@ -5,9 +5,10 @@
 '''
 
 
-from uiBasicWidget import QtGui, QtWidgets, QtCore
-from vnpy.event import *
-from language import text
+from vnpy.event import Event
+
+from vnpy.trader.uiBasicWidget import QtGui, QtWidgets, QtCore
+from vnpy.trader.riskManager.language import text
 
 
 ########################################################################
diff --git a/vnpy/trader/uiBasicWidget.py b/vnpy/trader/uiBasicWidget.py
index 6f02f910..e04c39de 100644
--- a/vnpy/trader/uiBasicWidget.py
+++ b/vnpy/trader/uiBasicWidget.py
@@ -5,14 +5,13 @@ import csv
 import os
 from collections import OrderedDict
 
-#from PyQt4 import QtGui, QtCore
 from qtpy import QtWidgets, QtGui, QtCore
 
 from vnpy.event import *
 from vnpy.trader.vtEvent import *
-from vtFunction import *
-from vtGateway import *
-import vtText
+from vnpy.trader.vtFunction import *
+from vnpy.trader.vtGateway import *
+from vnpy.trader import vtText as vtText
 
 
 COLOR_RED = QtGui.QColor('red')
diff --git a/vnpy/trader/uiMainWindow.py b/vnpy/trader/uiMainWindow.py
index e7a6bf95..1abc5c50 100644
--- a/vnpy/trader/uiMainWindow.py
+++ b/vnpy/trader/uiMainWindow.py
@@ -2,11 +2,11 @@
 
 import psutil
 
-from gateway import GATEWAY_DICT
-from uiBasicWidget import *
-from ctaStrategy.uiCtaWidget import CtaEngineManager
-from dataRecorder.uiDrWidget import DrEngineManager
-from riskManager.uiRmWidget import RmEngineManager
+from vnpy.trader.gateway import GATEWAY_DICT
+from vnpy.trader.uiBasicWidget import *
+from vnpy.trader.ctaStrategy.uiCtaWidget import CtaEngineManager
+from vnpy.trader.dataRecorder.uiDrWidget import DrEngineManager
+from vnpy.trader.riskManager.uiRmWidget import RmEngineManager
 
 
 ########################################################################
diff --git a/vnpy/trader/vtClient.py b/vnpy/trader/vtClient.py
index 65672293..a3e9f25d 100644
--- a/vnpy/trader/vtClient.py
+++ b/vnpy/trader/vtClient.py
@@ -11,9 +11,9 @@ from uiMainWindow import *
 from vnpy.event import EventEngine
 from vnpy.rpc import RpcClient
 
-from ctaStrategy.ctaEngine import CtaEngine
-from dataRecorder.drEngine import DrEngine
-from riskManager.rmEngine import RmEngine
+from vnpy.trader.ctaStrategy.ctaEngine import CtaEngine
+from vnpy.trader.dataRecorder.drEngine import DrEngine
+from vnpy.trader.riskManager.rmEngine import RmEngine
 
 
 
diff --git a/vnpy/trader/vtConstant.py b/vnpy/trader/vtConstant.py
index 266dd0d9..be0269ef 100644
--- a/vnpy/trader/vtConstant.py
+++ b/vnpy/trader/vtConstant.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-from language import constant
+from vnpy.trader.language import constant
 
 # 将常量定义添加到vtConstant.py的局部字典中
 d = locals()
diff --git a/vnpy/trader/vtEngine.py b/vnpy/trader/vtEngine.py
index 1d39617b..9f1ad7b2 100644
--- a/vnpy/trader/vtEngine.py
+++ b/vnpy/trader/vtEngine.py
@@ -7,16 +7,16 @@ from datetime import datetime
 from pymongo import MongoClient
 from pymongo.errors import ConnectionFailure
 
-from vnpy.trader.vtGlobal import globalSetting
 from vnpy.event import *
+from vnpy.trader.vtGlobal import globalSetting
 from vnpy.trader.vtEvent import *
-from vtGateway import *
-from language import text
+from vnpy.trader.vtGateway import *
+from vnpy.trader.language import text
 
-from gateway import GATEWAY_DICT
-from ctaStrategy.ctaEngine import CtaEngine
-from dataRecorder.drEngine import DrEngine
-from riskManager.rmEngine import RmEngine
+from vnpy.trader.gateway import GATEWAY_DICT
+from vnpy.trader.ctaStrategy.ctaEngine import CtaEngine
+from vnpy.trader.dataRecorder.drEngine import DrEngine
+from vnpy.trader.riskManager.rmEngine import RmEngine
 
 
 ########################################################################
@@ -86,7 +86,7 @@ class MainEngine(object):
             
             # 接口连接后自动执行数据库连接的任务
             #self.dbConnect()        
-            
+   
     #----------------------------------------------------------------------
     def subscribe(self, subscribeReq, gatewayName):
         """订阅特定接口的行情"""
@@ -94,7 +94,7 @@ class MainEngine(object):
         
         if gateway:
             gateway.subscribe(subscribeReq)
-            
+  
     #----------------------------------------------------------------------
     def sendOrder(self, orderReq, gatewayName):
         """对特定接口发单"""
@@ -116,7 +116,7 @@ class MainEngine(object):
         
         if gateway:
             gateway.cancelOrder(cancelOrderReq)   
-            
+  
     #----------------------------------------------------------------------
     def qryAccount(self, gatewayName):
         """查询特定接口的账户"""
diff --git a/vnpy/trader/vtGateway.py b/vnpy/trader/vtGateway.py
index a22fe3a7..5e63cc67 100644
--- a/vnpy/trader/vtGateway.py
+++ b/vnpy/trader/vtGateway.py
@@ -3,10 +3,10 @@
 import time
 
 from vnpy.event import *
-from vnpy.trader.vtEvent import *
 
-from vtConstant import *
-from vtObject import *
+from vnpy.trader.vtEvent import *
+from vnpy.trader.vtConstant import *
+from vnpy.trader.vtObject import *
 
 
 ########################################################################
diff --git a/vnpy/trader/vtMain.py b/vnpy/trader/vtMain.py
index 28313623..61d5a83d 100644
--- a/vnpy/trader/vtMain.py
+++ b/vnpy/trader/vtMain.py
@@ -4,7 +4,6 @@ import sys
 import os
 import platform
 
-#from PyQt4 import QtGui, QtCore
 from qtpy import QtWidgets, QtGui
 
 from vnpy.trader.vtGlobal import globalSetting
diff --git a/vnpy/trader/vtObject.py b/vnpy/trader/vtObject.py
index 5f118f74..e6f97a96 100644
--- a/vnpy/trader/vtObject.py
+++ b/vnpy/trader/vtObject.py
@@ -2,7 +2,7 @@
 
 import time
 
-from vtConstant import *
+from vnpy.trader.vtConstant import EMPTY_STRING, EMPTY_UNICODE, EMPTY_FLOAT, EMPTY_INT
 
 
 ########################################################################
diff --git a/vnpy/trader/vtServer.py b/vnpy/trader/vtServer.py
index faed0253..1290e0df 100644
--- a/vnpy/trader/vtServer.py
+++ b/vnpy/trader/vtServer.py
@@ -8,7 +8,7 @@ from time import sleep
 from threading import Thread
 
 from vnpy.rpc import RpcServer
-from vtEngine import MainEngine
+from vnpy.trader.vtEngine import MainEngine
 
 
 ########################################################################
diff --git a/vnpy/trader/vtText.py b/vnpy/trader/vtText.py
index d9ea0eea..77863483 100644
--- a/vnpy/trader/vtText.py
+++ b/vnpy/trader/vtText.py
@@ -1,6 +1,6 @@
 # encoding: UTF-8
 
-from language import text
+from vnpy.trader.language import text
 
 # 将常量定义添加到vtText.py的局部字典中
 d = locals()