diff --git a/Preliminary knowledge/Data_Operation.py b/Preliminary knowledge/Data_Operation.py
index 20bce60..00e7c2c 100644
--- a/Preliminary knowledge/Data_Operation.py	
+++ b/Preliminary knowledge/Data_Operation.py	
@@ -26,4 +26,7 @@ mid = pd.get_dummies(mid, dummy_na=True)
 
 print(mid)
 
-# 修改提交测试推送
\ No newline at end of file
+# 修改提交测试推送
+
+
+# test进行提交测试
\ No newline at end of file