Who can explain it for me???

Question

x= {1:0, 0:1}
y= [1,[4,6,5,4],2]
print(list(set(y[x[0]]))[1])

- - > 5

Answer 1

list(set(y[x[0]]))[1]==
==list(set(y[1]))[1]==
==list(set([4,6,5,4]))[1]==
==list({4,5,6]})[1]==
==[4,5,6][1]==
==5

Answer 2

Thank you