diff --git a/calc.py b/calc.py
index d197400..20a7a10 100644
--- a/calc.py
+++ b/calc.py
@@ -1,6 +1,8 @@
 """
 calc.py: A simple command-line calculator
 """
+
+#importing libraries
 import sys
 
 filename, num1, op, num2 = sys.argv