Answer: Python Puzzler #557

The answer is D. The program prints:

banana
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
0-5banana
1-4apple
2-3mango
3-2plum
4-1melon

The code again

basket = ["banana", "apple", "mango", "plum", "melon"]
print(basket[0])

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