script_20.py - Enumerate Example with Index

Code

#!/usr/bin/env python3
"""Enumerate example with index"""

fruits = ["apple", "banana", "cherry", "date"]

for index, fruit in enumerate(fruits, start=1):
    print(f"{index}. {fruit}")

Explanation

Line 4: fruits = ["apple", "banana", "cherry", "date"] - List of strings

Line 6: for index, fruit in enumerate(fruits, start=1): - enumerate() is built-in function that adds counter to iterable - Returns tuples of (index, element) - start=1 parameter makes counter start at 1 (default is 0) - Tuple unpacking: index, fruit gets both values - index gets the counter (integer) - fruit gets the list element (string) - Without enumerate: would need for i in range(len(fruits)) then fruits[i] - More Pythonic than manual index tracking

Line 7: print(f"{index}. {fruit}") - Both variables available from tuple unpacking - Creates numbered list: "1. apple", "2. banana", etc.