Insert method output not as expected i thought it corresponds to (index,value) what is the reason behind this

Question

why is the output as below

g=[] 
g.insert(3,5)
g.insert(2,6)
g.insert(1,7)
g.insert(0,8)

print(g) 

was expecting [8,7,6,5]

but the O/P is [8, 5, 7, 6]

Answer 1

    g= []
    g.insert(3,8)
    print(g[0]) -> O/P - 8
    print(g[3]) -> O/P - It will give an error.

If the list is empty and you will try to insert at any other position except 0, it will store that value only at position 0.