diff --git a/python/checker_save.py b/python/checker_save.py
index d2bd656..a3f85a0 100644
--- a/python/checker_save.py
+++ b/python/checker_save.py
@@ -33,3 +33,12 @@ class save:
                 s+='_'
         return s
 
+
+
+
+
+if __name__ == "__main__":
+    sa=save()
+    print(sa.hex2bit(bytes([0xab,0xcd])))
+
+