Answer: Python Puzzler #467

The answer is A. The program prints:

melon
What the program prints
Checked by running the program for real.

Why?

Python counts list positions from 0, so position 0 is the first item.

Trace table

A trace table follows the program step by step. Here’s this one:

positionnegative positionitem
0-5melon
1-4grape
2-3apple
3-2carrot
4-1pear

The code again

basket = ["melon", "grape", "apple", "carrot", "pear"]
print(basket[0])

Try it: change one number in the program and predict the new output before you run it.