diff --git a/common/file.py b/common/file.py
index 8d042c575685adad2a3284cb96995c06778ee66b..c08695434ceab80c5f44075be7c122f49d064f7c 100644
--- a/common/file.py
+++ b/common/file.py
@@ -70,3 +70,10 @@ class FileOperation:
                     dist_list.append(i)
                 i = i + 1 
         return dist_list
+
+    @staticmethod
+    def readfile(filename):
+        txt = ''
+        with io.open(file = filename, mode = 'r', encoding = 'utf-8') as fp:
+            txt = fp.read()
+        return txt