Answer: Python Puzzler #1040

The answer is C. The program prints:

[10, 21, 29, 34, 35]
What the program prints
Checked by running the program for real.

Why?

sort() puts the list in order, smallest first. It changes the list itself.

The code again

scores = [29, 10, 35, 21, 34]
scores.sort()
print(scores)

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