diff --git a/common/file.py b/common/file.py
index 2184699d90d05ca56f05d571f30556fb157ca688..8429223c7fc7ff472297030d8657bc67acaf504d 100644
--- a/common/file.py
+++ b/common/file.py
@@ -58,15 +58,8 @@ class FileOperation:
 
     @staticmethod
     def if_str_in_file(file_name, dist_str):
-        i = 0 
-        with io.open(file_name,'r') as file:
-            for item in file.readlines():
-                if dist_str in str(item):
-                    i = i + 1 
-        if i != 0:
-            return True
-        else:
-            return False
+        with open(file_name, 'r') as file:
+            return any(dist_str in line for line in file)
 
     @staticmethod
     def get_str_num_in_file(file_name, dist_str):