diff --git a/main.py b/main.py
index 6d752a7..85db91d 100644
--- a/main.py
+++ b/main.py
@@ -1,6 +1,6 @@
 
 
-
+#student_practic
 def remove_duplicate_chars(s: str) -> str:
    have_char = []
    answer_str=''
@@ -9,5 +9,5 @@ def remove_duplicate_chars(s: str) -> str:
            have_char.append(i)
            answer_str += i
    return answer_str
-
+#test function
 print (remove_duplicate_chars("abacabad") )