Add Python tip using enumerate() for loops

README.md

@@ -1 +1,3 @@
-# ai-learning
+## Python Tip: Use `enumerate()`
+
+Instead of using a loop with a manual index, use `enumerate()`:

chatgpt-test.py

@@ -1,14 +1,6 @@
-# This is a placeholder for AI experiments
-print("Hello AI! This is my first AI script.")
+# chatgpt-test.py
 
-### Description
-
-# In several Python examples within the project, loops manually track indexes using counters.  
-# Python provides a built-in function `enumerate()` that simplifies this pattern and improves readability.
-
-### Current pattern
-
-items = ['apple', 'banana', 'cherry']
-
-for i, item in enumerate(items):
-    print(i, item)
+# Example of using enumerate to iterate with index and value
+data = ['apple', 'banana', 'cherry']
+for index, value in enumerate(data):
+    print(f"Index: {index}, Value: {value}")