diff --git a/examples/close_sma5_dist.py b/examples/dropit/close_sma5_dist.py
similarity index 100%
rename from examples/close_sma5_dist.py
rename to examples/dropit/close_sma5_dist.py
diff --git a/examples/explore_func_tree.py b/examples/dropit/explore_func_tree.py
similarity index 100%
rename from examples/explore_func_tree.py
rename to examples/dropit/explore_func_tree.py
diff --git a/examples/use_cta_research.py b/examples/use_cta_research.py
index bec7cdf92..696663b29 100644
--- a/examples/use_cta_research.py
+++ b/examples/use_cta_research.py
@@ -3,7 +3,7 @@
 author: zengbin93
 email: zeng_bin8888@163.com
 create_dt: 2023/6/7 21:12
-describe: 
+describe:
 """
 import sys
 sys.path.insert(0, '.')
@@ -23,6 +23,3 @@
 if __name__ == '__main__':
     # 策略回测，如果是使用多进程，必须在 __main__ 中执行，且必须是在命令行中执行
     bot.backtest(symbols=get_symbols("中证500成分股")[:10], max_workers=3, bar_sdt='20190101', edt='20220101', sdt='20200101')
-
-
-