diff --git a/fs_class.py b/fs_class.py
index 477f6a8..c8c7590 100644
--- a/fs_class.py
+++ b/fs_class.py
@@ -1,8 +1,8 @@
 #/usr/bin/python
-def hash_file(path):
-
+def hash_file(path,hash_if_less,sample):
+    return _imohash(path,hash_if_less,sample)
 class fs:
-    def __init__(self,top,db_path=None,hash_threshold=1024**2):
+    def __init__(self,top,db_path=None,hash_threshold=1024**2,sample=128*1024):
         self.top=top
         self.hash_threshold=hash_threshold
         if db_path is not None: