Question

For some reason this code doesn’t print anything and doesn’t stop running, can anybody tell me what is going wrong here?

l = [1,2]
i = 0
k = l[i]+l[i+1]
while k <= 10:
    l.append(k)
    i += 1

print l

Answer 1

The value of k (and therefore the loop condition) is set before the loop using the current value of i (0), and never changes during the loop execution. You would have to reassign k based on the new value for i inside the loop for it to change.