Can anyone explain how works this python code?

Question

a = [1, 1, 2, 3, 5, 8]
for a[1] in a:
pass
print(a)
#output: [1, 8, 2, 3, 5, 8]

Answer 1

a iterates over a[1], so a is 1, then 1, then 2, then 3, then 5, then 8; and it stays 8 after the loop has ended