diff --git a/Preliminary knowledge/Data_Operation.py b/Preliminary knowledge/Data_Operation.py
index 96a340f..20bce60 100644
--- a/Preliminary knowledge/Data_Operation.py	
+++ b/Preliminary knowledge/Data_Operation.py	
@@ -24,4 +24,6 @@ mid = data.iloc[:, 1:2]
 
 mid = pd.get_dummies(mid, dummy_na=True)
 
-print(mid)
\ No newline at end of file
+print(mid)
+
+# 修改提交测试推送
\ No newline at end of file