Update names.py

Author: briandoyle81

names/names.py

@@ -20,3 +20,7 @@
 print (f"{len(duplicates)} duplicates:\n\n{', '.join(duplicates)}\n\n")
 print (f"runtime: {end_time - start_time} seconds")
 
+# ---------- Stretch Goal -----------
+# Python has built-in tools that allow for a very efficient approach to this problem
+# What's the best time you can accomplish with no restrictions on techniques or data
+# structures?