diff --git a/math_logic_dp/happy_number.py b/math_logic_dp/happy_number.py
index 5e91765..235d1e6 100644
--- a/math_logic_dp/happy_number.py
+++ b/math_logic_dp/happy_number.py
@@ -1,3 +1,8 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# author: bt3gl
+
+
 def get_next(n):
   
   total_sum = 0