diff --git a/tqsdk/__init__.py b/tqsdk/__init__.py
index 3d7f6ff0..fc8be50b 100644
--- a/tqsdk/__init__.py
+++ b/tqsdk/__init__.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 name = "tqsdk"
diff --git a/tqsdk/account.py b/tqsdk/account.py
index c1801e44..39bbd9da 100644
--- a/tqsdk/account.py
+++ b/tqsdk/account.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/algorithm/__init__.py b/tqsdk/algorithm/__init__.py
index dbcf60c3..99661a30 100644
--- a/tqsdk/algorithm/__init__.py
+++ b/tqsdk/algorithm/__init__.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/algorithm/time_table_generater.py b/tqsdk/algorithm/time_table_generater.py
index ec3e1695..664d8eef 100644
--- a/tqsdk/algorithm/time_table_generater.py
+++ b/tqsdk/algorithm/time_table_generater.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/algorithm/twap.py b/tqsdk/algorithm/twap.py
index 335a395a..f0807c96 100644
--- a/tqsdk/algorithm/twap.py
+++ b/tqsdk/algorithm/twap.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/api.py b/tqsdk/api.py
index 0f7c4076..a0f2ba4a 100644
--- a/tqsdk/api.py
+++ b/tqsdk/api.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 """
 天勤接口的PYTHON封装, 提供以下功能
diff --git a/tqsdk/backtest.py b/tqsdk/backtest.py
index f8ec5b88..0d571bb6 100644
--- a/tqsdk/backtest.py
+++ b/tqsdk/backtest.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/backtest/__init__.py b/tqsdk/backtest/__init__.py
index 844369c8..e14d0809 100644
--- a/tqsdk/backtest/__init__.py
+++ b/tqsdk/backtest/__init__.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/backtest/backtest.py b/tqsdk/backtest/backtest.py
index 4e2a956b..32faa65b 100644
--- a/tqsdk/backtest/backtest.py
+++ b/tqsdk/backtest/backtest.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/backtest/replay.py b/tqsdk/backtest/replay.py
index 4f95ba85..1989372d 100644
--- a/tqsdk/backtest/replay.py
+++ b/tqsdk/backtest/replay.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/backtest/utils.py b/tqsdk/backtest/utils.py
index ec003e2f..969530cf 100644
--- a/tqsdk/backtest/utils.py
+++ b/tqsdk/backtest/utils.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/baseApi.py b/tqsdk/baseApi.py
index e51f46d4..b2f44cff 100644
--- a/tqsdk/baseApi.py
+++ b/tqsdk/baseApi.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/baseModule.py b/tqsdk/baseModule.py
index 4553f816..dfcb2e93 100644
--- a/tqsdk/baseModule.py
+++ b/tqsdk/baseModule.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/calendar.py b/tqsdk/calendar.py
index 9a4b1a97..c21c324d 100644
--- a/tqsdk/calendar.py
+++ b/tqsdk/calendar.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 """
 交易日历处理
diff --git a/tqsdk/channel.py b/tqsdk/channel.py
index 3c7a728a..eeec9115 100644
--- a/tqsdk/channel.py
+++ b/tqsdk/channel.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/connect.py b/tqsdk/connect.py
index b557dc62..ca91027a 100644
--- a/tqsdk/connect.py
+++ b/tqsdk/connect.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/constants.py b/tqsdk/constants.py
index 81ebcdba..1ac91c77 100644
--- a/tqsdk/constants.py
+++ b/tqsdk/constants.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/data_extension.py b/tqsdk/data_extension.py
index 0dfb741e..5eadba0b 100644
--- a/tqsdk/data_extension.py
+++ b/tqsdk/data_extension.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/data_series.py b/tqsdk/data_series.py
index 69ad0bdf..9252d21c 100644
--- a/tqsdk/data_series.py
+++ b/tqsdk/data_series.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/datetime.py b/tqsdk/datetime.py
index 5234baef..31ad85b8 100644
--- a/tqsdk/datetime.py
+++ b/tqsdk/datetime.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 """
 包含有关时间处理的功能函数
diff --git a/tqsdk/datetime_state.py b/tqsdk/datetime_state.py
index 5fcd423a..e1ca8cee 100644
--- a/tqsdk/datetime_state.py
+++ b/tqsdk/datetime_state.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/demo/download_orders.py b/tqsdk/demo/download_orders.py
index 39ce0edb..e3733792 100644
--- a/tqsdk/demo/download_orders.py
+++ b/tqsdk/demo/download_orders.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/demo/example/aberration.py b/tqsdk/demo/example/aberration.py
index 6e899a17..6706b78a 100644
--- a/tqsdk/demo/example/aberration.py
+++ b/tqsdk/demo/example/aberration.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = "Ringo"
 
diff --git a/tqsdk/demo/example/doublema.py b/tqsdk/demo/example/doublema.py
index 3d21a770..17e0e45a 100644
--- a/tqsdk/demo/example/doublema.py
+++ b/tqsdk/demo/example/doublema.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/demo/example/dualthrust.py b/tqsdk/demo/example/dualthrust.py
index df305e57..51947d1a 100644
--- a/tqsdk/demo/example/dualthrust.py
+++ b/tqsdk/demo/example/dualthrust.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/demo/example/escalator.py b/tqsdk/demo/example/escalator.py
index bb2b7931..466037a2 100644
--- a/tqsdk/demo/example/escalator.py
+++ b/tqsdk/demo/example/escalator.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = "Ringo"
 
diff --git a/tqsdk/demo/example/fairy_four_price.py b/tqsdk/demo/example/fairy_four_price.py
index abf27f71..a5c2fa53 100644
--- a/tqsdk/demo/example/fairy_four_price.py
+++ b/tqsdk/demo/example/fairy_four_price.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/demo/example/gridtrading.py b/tqsdk/demo/example/gridtrading.py
index fc4a73ea..9803f2bc 100644
--- a/tqsdk/demo/example/gridtrading.py
+++ b/tqsdk/demo/example/gridtrading.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/demo/example/gridtrading_async.py b/tqsdk/demo/example/gridtrading_async.py
index 9ba34037..6bb55926 100644
--- a/tqsdk/demo/example/gridtrading_async.py
+++ b/tqsdk/demo/example/gridtrading_async.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/demo/example/momentum.py b/tqsdk/demo/example/momentum.py
index cbb80a1e..e8c3a17b 100644
--- a/tqsdk/demo/example/momentum.py
+++ b/tqsdk/demo/example/momentum.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = "Ringo"
 
diff --git a/tqsdk/demo/example/random_forest.py b/tqsdk/demo/example/random_forest.py
index 20b7b553..1882ac1d 100644
--- a/tqsdk/demo/example/random_forest.py
+++ b/tqsdk/demo/example/random_forest.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/demo/example/rbreaker.py b/tqsdk/demo/example/rbreaker.py
index 106990d6..410ba419 100644
--- a/tqsdk/demo/example/rbreaker.py
+++ b/tqsdk/demo/example/rbreaker.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/demo/example/turtle.py b/tqsdk/demo/example/turtle.py
index e01fee78..0f501340 100644
--- a/tqsdk/demo/example/turtle.py
+++ b/tqsdk/demo/example/turtle.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/demo/example/vwap.py b/tqsdk/demo/example/vwap.py
index 5454958b..a94914bf 100644
--- a/tqsdk/demo/example/vwap.py
+++ b/tqsdk/demo/example/vwap.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/demo/multiaccount.py b/tqsdk/demo/multiaccount.py
index 04f3b6bf..892b653c 100644
--- a/tqsdk/demo/multiaccount.py
+++ b/tqsdk/demo/multiaccount.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'hongyan'
 
diff --git a/tqsdk/demo/option_tutorial/o10.py b/tqsdk/demo/option_tutorial/o10.py
index c16ddd54..f0eedb41 100644
--- a/tqsdk/demo/option_tutorial/o10.py
+++ b/tqsdk/demo/option_tutorial/o10.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'ringo'
 
diff --git a/tqsdk/demo/option_tutorial/o20.py b/tqsdk/demo/option_tutorial/o20.py
index d1a3bfb6..34a6d963 100644
--- a/tqsdk/demo/option_tutorial/o20.py
+++ b/tqsdk/demo/option_tutorial/o20.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'ringo'
 
diff --git a/tqsdk/demo/option_tutorial/o30.py b/tqsdk/demo/option_tutorial/o30.py
index 1f24d6d0..7bcdb548 100644
--- a/tqsdk/demo/option_tutorial/o30.py
+++ b/tqsdk/demo/option_tutorial/o30.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'ringo'
 
diff --git a/tqsdk/demo/option_tutorial/o40.py b/tqsdk/demo/option_tutorial/o40.py
index 07c0e8e9..31a65a4f 100644
--- a/tqsdk/demo/option_tutorial/o40.py
+++ b/tqsdk/demo/option_tutorial/o40.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'ringo'
 
diff --git a/tqsdk/demo/option_tutorial/o41.py b/tqsdk/demo/option_tutorial/o41.py
index dcbe1d82..47f96425 100644
--- a/tqsdk/demo/option_tutorial/o41.py
+++ b/tqsdk/demo/option_tutorial/o41.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'ringo'
 
diff --git a/tqsdk/demo/ta.py b/tqsdk/demo/ta.py
index 479d89d8..169c8c0d 100644
--- a/tqsdk/demo/ta.py
+++ b/tqsdk/demo/ta.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/demo/ta_option.py b/tqsdk/demo/ta_option.py
index c48cd189..8a81160d 100644
--- a/tqsdk/demo/ta_option.py
+++ b/tqsdk/demo/ta_option.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 #-*- coding:utf-8 -*-
 
 from tqsdk import TqApi, TqAuth, tafunc
diff --git a/tqsdk/demo/tutorial/backtest.py b/tqsdk/demo/tutorial/backtest.py
index ae4bc18e..aae11cd8 100644
--- a/tqsdk/demo/tutorial/backtest.py
+++ b/tqsdk/demo/tutorial/backtest.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/demo/tutorial/downloader.py b/tqsdk/demo/tutorial/downloader.py
index 7d5890bb..105a5335 100644
--- a/tqsdk/demo/tutorial/downloader.py
+++ b/tqsdk/demo/tutorial/downloader.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/demo/tutorial/replay.py b/tqsdk/demo/tutorial/replay.py
index 38c5e4a3..5b809183 100644
--- a/tqsdk/demo/tutorial/replay.py
+++ b/tqsdk/demo/tutorial/replay.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/demo/tutorial/replay2.py b/tqsdk/demo/tutorial/replay2.py
index 74b6fa81..fbdf053e 100644
--- a/tqsdk/demo/tutorial/replay2.py
+++ b/tqsdk/demo/tutorial/replay2.py
@@ -1,6 +1,4 @@
-#!usr/bin/env python3
-#-*- coding:utf-8 -*-
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/demo/tutorial/t10.py b/tqsdk/demo/tutorial/t10.py
index a545e4bf..9afea3d1 100644
--- a/tqsdk/demo/tutorial/t10.py
+++ b/tqsdk/demo/tutorial/t10.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/demo/tutorial/t20.py b/tqsdk/demo/tutorial/t20.py
index a5ff67f6..85070222 100644
--- a/tqsdk/demo/tutorial/t20.py
+++ b/tqsdk/demo/tutorial/t20.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/demo/tutorial/t30.py b/tqsdk/demo/tutorial/t30.py
index f096c9b6..3b280850 100644
--- a/tqsdk/demo/tutorial/t30.py
+++ b/tqsdk/demo/tutorial/t30.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/demo/tutorial/t40.py b/tqsdk/demo/tutorial/t40.py
index a8b9de61..7a994320 100644
--- a/tqsdk/demo/tutorial/t40.py
+++ b/tqsdk/demo/tutorial/t40.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/demo/tutorial/t41.py b/tqsdk/demo/tutorial/t41.py
index e6b57b7e..9ebfc578 100644
--- a/tqsdk/demo/tutorial/t41.py
+++ b/tqsdk/demo/tutorial/t41.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 
 from tqsdk import TqApi, TqAuth
diff --git a/tqsdk/demo/tutorial/t50.py b/tqsdk/demo/tutorial/t50.py
index 4dbc8ce8..825c1b47 100644
--- a/tqsdk/demo/tutorial/t50.py
+++ b/tqsdk/demo/tutorial/t50.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chaos'
 
diff --git a/tqsdk/demo/tutorial/t51.py b/tqsdk/demo/tutorial/t51.py
index 6a1da562..d775375f 100644
--- a/tqsdk/demo/tutorial/t51.py
+++ b/tqsdk/demo/tutorial/t51.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chaos'
 
diff --git a/tqsdk/demo/tutorial/t52.py b/tqsdk/demo/tutorial/t52.py
index 4df4aa7f..5065aed1 100644
--- a/tqsdk/demo/tutorial/t52.py
+++ b/tqsdk/demo/tutorial/t52.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chaos'
 
diff --git a/tqsdk/demo/tutorial/t53.py b/tqsdk/demo/tutorial/t53.py
index b064db2e..62768dd0 100644
--- a/tqsdk/demo/tutorial/t53.py
+++ b/tqsdk/demo/tutorial/t53.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chaos'
 
diff --git a/tqsdk/demo/tutorial/t54.py b/tqsdk/demo/tutorial/t54.py
index 3bbcf9ef..ae2c8b4c 100644
--- a/tqsdk/demo/tutorial/t54.py
+++ b/tqsdk/demo/tutorial/t54.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chaos'
 
diff --git a/tqsdk/demo/tutorial/t55.py b/tqsdk/demo/tutorial/t55.py
index a1074c25..bcb2e97a 100644
--- a/tqsdk/demo/tutorial/t55.py
+++ b/tqsdk/demo/tutorial/t55.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chaos'
 
diff --git a/tqsdk/demo/tutorial/t56.py b/tqsdk/demo/tutorial/t56.py
index 2bd90496..1b70917f 100644
--- a/tqsdk/demo/tutorial/t56.py
+++ b/tqsdk/demo/tutorial/t56.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chaos'
 
diff --git a/tqsdk/demo/tutorial/t57.py b/tqsdk/demo/tutorial/t57.py
index 3e9e77b4..0498304a 100644
--- a/tqsdk/demo/tutorial/t57.py
+++ b/tqsdk/demo/tutorial/t57.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chaos'
 
diff --git a/tqsdk/demo/tutorial/t58.py b/tqsdk/demo/tutorial/t58.py
index 194620fc..988a870c 100644
--- a/tqsdk/demo/tutorial/t58.py
+++ b/tqsdk/demo/tutorial/t58.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chaos'
 
diff --git a/tqsdk/demo/tutorial/t59.py b/tqsdk/demo/tutorial/t59.py
index f7e9b014..b38878a0 100644
--- a/tqsdk/demo/tutorial/t59.py
+++ b/tqsdk/demo/tutorial/t59.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chaos'
 
diff --git a/tqsdk/demo/tutorial/t60.py b/tqsdk/demo/tutorial/t60.py
index 44134c20..37d2414b 100644
--- a/tqsdk/demo/tutorial/t60.py
+++ b/tqsdk/demo/tutorial/t60.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/demo/tutorial/t70.py b/tqsdk/demo/tutorial/t70.py
index d1e7fcec..43636877 100644
--- a/tqsdk/demo/tutorial/t70.py
+++ b/tqsdk/demo/tutorial/t70.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/demo/tutorial/t71.py b/tqsdk/demo/tutorial/t71.py
index c73e7435..dcacfc1a 100644
--- a/tqsdk/demo/tutorial/t71.py
+++ b/tqsdk/demo/tutorial/t71.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/demo/tutorial/t72.py b/tqsdk/demo/tutorial/t72.py
index ee941551..db2136ff 100644
--- a/tqsdk/demo/tutorial/t72.py
+++ b/tqsdk/demo/tutorial/t72.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'ringo'
 
diff --git a/tqsdk/demo/tutorial/t80.py b/tqsdk/demo/tutorial/t80.py
index 664f0206..453d8ebb 100644
--- a/tqsdk/demo/tutorial/t80.py
+++ b/tqsdk/demo/tutorial/t80.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/demo/tutorial/t90.py b/tqsdk/demo/tutorial/t90.py
index dfb88a2f..d59aead7 100644
--- a/tqsdk/demo/tutorial/t90.py
+++ b/tqsdk/demo/tutorial/t90.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/demo/tutorial/t91.py b/tqsdk/demo/tutorial/t91.py
index b892a925..5f60ea52 100644
--- a/tqsdk/demo/tutorial/t91.py
+++ b/tqsdk/demo/tutorial/t91.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/demo/tutorial/t92.py b/tqsdk/demo/tutorial/t92.py
index fd1913fe..e9464f1b 100644
--- a/tqsdk/demo/tutorial/t92.py
+++ b/tqsdk/demo/tutorial/t92.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/demo/tutorial/t93.py b/tqsdk/demo/tutorial/t93.py
index c36154f8..528a6bb6 100644
--- a/tqsdk/demo/tutorial/t93.py
+++ b/tqsdk/demo/tutorial/t93.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/demo/tutorial/t94.py b/tqsdk/demo/tutorial/t94.py
index 0d7b77c8..ce642830 100644
--- a/tqsdk/demo/tutorial/t94.py
+++ b/tqsdk/demo/tutorial/t94.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/demo/tutorial/t95.py b/tqsdk/demo/tutorial/t95.py
index 96331c8c..dc5aedf7 100644
--- a/tqsdk/demo/tutorial/t95.py
+++ b/tqsdk/demo/tutorial/t95.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/demo/tutorial/t96.py b/tqsdk/demo/tutorial/t96.py
index c3998590..35280c75 100644
--- a/tqsdk/demo/tutorial/t96.py
+++ b/tqsdk/demo/tutorial/t96.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/demo/tutorial/underlying_symbol.py b/tqsdk/demo/tutorial/underlying_symbol.py
index d9a6c41d..6287b7b8 100644
--- a/tqsdk/demo/tutorial/underlying_symbol.py
+++ b/tqsdk/demo/tutorial/underlying_symbol.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = "Ringo"
 
diff --git a/tqsdk/diff.py b/tqsdk/diff.py
index 5dd89adc..fb909a91 100644
--- a/tqsdk/diff.py
+++ b/tqsdk/diff.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 #-*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/entity.py b/tqsdk/entity.py
index 317470ea..8c3fe2ed 100644
--- a/tqsdk/entity.py
+++ b/tqsdk/entity.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 #-*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/exceptions.py b/tqsdk/exceptions.py
index f76ebdb2..1587146e 100644
--- a/tqsdk/exceptions.py
+++ b/tqsdk/exceptions.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/ins_schema.py b/tqsdk/ins_schema.py
index db889bbf..dbda1350 100644
--- a/tqsdk/ins_schema.py
+++ b/tqsdk/ins_schema.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/lib/__init__.py b/tqsdk/lib/__init__.py
index a774d55b..77b6a972 100644
--- a/tqsdk/lib/__init__.py
+++ b/tqsdk/lib/__init__.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/lib/notify.py b/tqsdk/lib/notify.py
index 11f24b61..3e518f9e 100644
--- a/tqsdk/lib/notify.py
+++ b/tqsdk/lib/notify.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/lib/target_pos_scheduler.py b/tqsdk/lib/target_pos_scheduler.py
index de862fa6..46ce4046 100644
--- a/tqsdk/lib/target_pos_scheduler.py
+++ b/tqsdk/lib/target_pos_scheduler.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/lib/target_pos_task.py b/tqsdk/lib/target_pos_task.py
index 27642e41..a7706cf8 100644
--- a/tqsdk/lib/target_pos_task.py
+++ b/tqsdk/lib/target_pos_task.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/lib/time_table.py b/tqsdk/lib/time_table.py
index 3bb3611b..1e20077c 100644
--- a/tqsdk/lib/time_table.py
+++ b/tqsdk/lib/time_table.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/lib/utils.py b/tqsdk/lib/utils.py
index 211d6c4b..a338c6f7 100644
--- a/tqsdk/lib/utils.py
+++ b/tqsdk/lib/utils.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/multiaccount.py b/tqsdk/multiaccount.py
index cef6fd4e..69101e0e 100644
--- a/tqsdk/multiaccount.py
+++ b/tqsdk/multiaccount.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 __time__ = '2020/8/5 22:45'
 __author__ = 'Hong Yan'
diff --git a/tqsdk/rangeset.py b/tqsdk/rangeset.py
index c52033c7..5c154f6a 100644
--- a/tqsdk/rangeset.py
+++ b/tqsdk/rangeset.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/report.py b/tqsdk/report.py
index 8d2f250e..fbf8164a 100644
--- a/tqsdk/report.py
+++ b/tqsdk/report.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/risk_manager.py b/tqsdk/risk_manager.py
index eab36ec2..b1fc6e79 100644
--- a/tqsdk/risk_manager.py
+++ b/tqsdk/risk_manager.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/risk_rule.py b/tqsdk/risk_rule.py
index 3defa483..7be5c72c 100644
--- a/tqsdk/risk_rule.py
+++ b/tqsdk/risk_rule.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/sim/__init__.py b/tqsdk/sim/__init__.py
index b3f4f6a5..0ae38fa4 100644
--- a/tqsdk/sim/__init__.py
+++ b/tqsdk/sim/__init__.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/sim/trade.py b/tqsdk/sim/trade.py
index b97e89ae..5fe04e81 100644
--- a/tqsdk/sim/trade.py
+++ b/tqsdk/sim/trade.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/sim/trade_base.py b/tqsdk/sim/trade_base.py
index 02ffae1a..240c9007 100644
--- a/tqsdk/sim/trade_base.py
+++ b/tqsdk/sim/trade_base.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/sim/utils.py b/tqsdk/sim/utils.py
index 2a7d62fd..b4525b54 100644
--- a/tqsdk/sim/utils.py
+++ b/tqsdk/sim/utils.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/sm.py b/tqsdk/sm.py
index a70a35e8..c2624464 100644
--- a/tqsdk/sm.py
+++ b/tqsdk/sm.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/stockprofit.py b/tqsdk/stockprofit.py
index c0815ac4..5865e43b 100644
--- a/tqsdk/stockprofit.py
+++ b/tqsdk/stockprofit.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 import math
 from tqsdk.entity import Entity
diff --git a/tqsdk/symbols.py b/tqsdk/symbols.py
index 5a61fab8..f7fa04e9 100644
--- a/tqsdk/symbols.py
+++ b/tqsdk/symbols.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/ta.py b/tqsdk/ta.py
index e330c37b..c555e4ec 100644
--- a/tqsdk/ta.py
+++ b/tqsdk/ta.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/tafunc.py b/tqsdk/tafunc.py
index cc44d70a..e589060b 100644
--- a/tqsdk/tafunc.py
+++ b/tqsdk/tafunc.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'limin'
 
diff --git a/tqsdk/tools/__init__.py b/tqsdk/tools/__init__.py
index 46fc8be6..20bb4228 100644
--- a/tqsdk/tools/__init__.py
+++ b/tqsdk/tools/__init__.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chengzhi'
 
diff --git a/tqsdk/tools/downloader.py b/tqsdk/tools/downloader.py
index bc0e7554..c2104473 100644
--- a/tqsdk/tools/downloader.py
+++ b/tqsdk/tools/downloader.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'yangyang'
 
diff --git a/tqsdk/tqwebhelper.py b/tqsdk/tqwebhelper.py
index 4e125095..4b46ec62 100644
--- a/tqsdk/tqwebhelper.py
+++ b/tqsdk/tqwebhelper.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/trade_extension.py b/tqsdk/trade_extension.py
index 9f9b42c5..093eefaf 100644
--- a/tqsdk/trade_extension.py
+++ b/tqsdk/trade_extension.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/tradeable/__init__.py b/tqsdk/tradeable/__init__.py
index f807a726..21e08345 100644
--- a/tqsdk/tradeable/__init__.py
+++ b/tqsdk/tradeable/__init__.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/tradeable/interface.py b/tqsdk/tradeable/interface.py
index d5c54584..117c617f 100644
--- a/tqsdk/tradeable/interface.py
+++ b/tqsdk/tradeable/interface.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/tradeable/mixin.py b/tqsdk/tradeable/mixin.py
index 1e934f9f..d25f5ce9 100644
--- a/tqsdk/tradeable/mixin.py
+++ b/tqsdk/tradeable/mixin.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/tradeable/otg/__init__.py b/tqsdk/tradeable/otg/__init__.py
index ef05bb17..ec7bd0b7 100644
--- a/tqsdk/tradeable/otg/__init__.py
+++ b/tqsdk/tradeable/otg/__init__.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/tradeable/otg/base_otg.py b/tqsdk/tradeable/otg/base_otg.py
index e54ce7ad..c8e9855e 100644
--- a/tqsdk/tradeable/otg/base_otg.py
+++ b/tqsdk/tradeable/otg/base_otg.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/tradeable/otg/tqaccount.py b/tqsdk/tradeable/otg/tqaccount.py
index 40637be3..5fe56e69 100644
--- a/tqsdk/tradeable/otg/tqaccount.py
+++ b/tqsdk/tradeable/otg/tqaccount.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/tradeable/otg/tqctp.py b/tqsdk/tradeable/otg/tqctp.py
index 9327bfaf..c3bd3962 100644
--- a/tqsdk/tradeable/otg/tqctp.py
+++ b/tqsdk/tradeable/otg/tqctp.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'chenli'
 
diff --git a/tqsdk/tradeable/otg/tqjees.py b/tqsdk/tradeable/otg/tqjees.py
index 13443266..ff8aa2fc 100644
--- a/tqsdk/tradeable/otg/tqjees.py
+++ b/tqsdk/tradeable/otg/tqjees.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'chenli'
 
diff --git a/tqsdk/tradeable/otg/tqkq.py b/tqsdk/tradeable/otg/tqkq.py
index 0a5b07f0..dda98b29 100644
--- a/tqsdk/tradeable/otg/tqkq.py
+++ b/tqsdk/tradeable/otg/tqkq.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/tradeable/otg/tqrohon.py b/tqsdk/tradeable/otg/tqrohon.py
index 0739add7..f8e6bd11 100644
--- a/tqsdk/tradeable/otg/tqrohon.py
+++ b/tqsdk/tradeable/otg/tqrohon.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'chenli'
 
diff --git a/tqsdk/tradeable/otg/tqtradingunit.py b/tqsdk/tradeable/otg/tqtradingunit.py
index 12ad8f90..4a149371 100644
--- a/tqsdk/tradeable/otg/tqtradingunit.py
+++ b/tqsdk/tradeable/otg/tqtradingunit.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'chenli'
 
diff --git a/tqsdk/tradeable/otg/tqyida.py b/tqsdk/tradeable/otg/tqyida.py
index b1672502..8e482e60 100644
--- a/tqsdk/tradeable/otg/tqyida.py
+++ b/tqsdk/tradeable/otg/tqyida.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'chenli'
 
diff --git a/tqsdk/tradeable/otg/tqzq.py b/tqsdk/tradeable/otg/tqzq.py
index 2a3bc36b..63a22def 100644
--- a/tqsdk/tradeable/otg/tqzq.py
+++ b/tqsdk/tradeable/otg/tqzq.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/tradeable/sim/__init__.py b/tqsdk/tradeable/sim/__init__.py
index ab3c8770..246b9981 100644
--- a/tqsdk/tradeable/sim/__init__.py
+++ b/tqsdk/tradeable/sim/__init__.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/tradeable/sim/basesim.py b/tqsdk/tradeable/sim/basesim.py
index 75a977c7..31e52e6d 100644
--- a/tqsdk/tradeable/sim/basesim.py
+++ b/tqsdk/tradeable/sim/basesim.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/tradeable/sim/tqsim.py b/tqsdk/tradeable/sim/tqsim.py
index 755433f9..6947b698 100644
--- a/tqsdk/tradeable/sim/tqsim.py
+++ b/tqsdk/tradeable/sim/tqsim.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/tradeable/sim/tqsim_stock.py b/tqsdk/tradeable/sim/tqsim_stock.py
index feb28c95..6cd3667e 100644
--- a/tqsdk/tradeable/sim/tqsim_stock.py
+++ b/tqsdk/tradeable/sim/tqsim_stock.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/tradeable/sim/trade.py b/tqsdk/tradeable/sim/trade.py
index 45592910..aff67cec 100644
--- a/tqsdk/tradeable/sim/trade.py
+++ b/tqsdk/tradeable/sim/trade.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/tradeable/sim/trade_base.py b/tqsdk/tradeable/sim/trade_base.py
index a77543ed..c88c43f0 100644
--- a/tqsdk/tradeable/sim/trade_base.py
+++ b/tqsdk/tradeable/sim/trade_base.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/tradeable/sim/trade_future.py b/tqsdk/tradeable/sim/trade_future.py
index c81a971f..44a39c34 100644
--- a/tqsdk/tradeable/sim/trade_future.py
+++ b/tqsdk/tradeable/sim/trade_future.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/tradeable/sim/trade_stock.py b/tqsdk/tradeable/sim/trade_stock.py
index 435ffbbf..9d93b00b 100644
--- a/tqsdk/tradeable/sim/trade_stock.py
+++ b/tqsdk/tradeable/sim/trade_stock.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = "mayanqiong"
 
diff --git a/tqsdk/tradeable/sim/utils.py b/tqsdk/tradeable/sim/utils.py
index ad5958fd..de8fe082 100644
--- a/tqsdk/tradeable/sim/utils.py
+++ b/tqsdk/tradeable/sim/utils.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/tradeable/tradeable.py b/tqsdk/tradeable/tradeable.py
index a8d8de10..4b8766a4 100644
--- a/tqsdk/tradeable/tradeable.py
+++ b/tqsdk/tradeable/tradeable.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 
 __author__ = 'mayanqiong'
diff --git a/tqsdk/trading_status.py b/tqsdk/trading_status.py
index 9a29462b..128b24a5 100644
--- a/tqsdk/trading_status.py
+++ b/tqsdk/trading_status.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/utils.py b/tqsdk/utils.py
index e6959059..7097b3eb 100644
--- a/tqsdk/utils.py
+++ b/tqsdk/utils.py
@@ -1,4 +1,4 @@
-#!usr/bin/env python3
+#!/usr/bin/env python3
 # -*- coding:utf-8 -*-
 __author__ = 'yanqiong'
 
diff --git a/tqsdk/utils_symbols.py b/tqsdk/utils_symbols.py
index de5a7816..5f0bb9f5 100644
--- a/tqsdk/utils_symbols.py
+++ b/tqsdk/utils_symbols.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'mayanqiong'
 
diff --git a/tqsdk/zq.py b/tqsdk/zq.py
index 1cb12071..736cf9c8 100644
--- a/tqsdk/zq.py
+++ b/tqsdk/zq.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chenli'
 
diff --git a/tqsdk/zq_otg.py b/tqsdk/zq_otg.py
index 8859fd4d..9bbc30c5 100644
--- a/tqsdk/zq_otg.py
+++ b/tqsdk/zq_otg.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #  -*- coding: utf-8 -*-
 __author__ = 'chenli'