Can someone explain me the solution of this question?

Question

x,y=20,60
y,x,y=x,y-10,x+10
print(x,y)

Answer 1

im not sure but i think its preloading the variables, and so it goes this way:

x=20
y=60
y=(preloaded x) 20
x =(preloaded y) 60-10
y =(preloaded x) 20 + 10

Answer 2

Why it is taking preloaded values of x and y . As the value changed in the second line . So in memory also the value should change?

Answer 3

a, b, *c, d = [1, 2, 3, 4, 5, 6, 7, 8, 9]
print(a)
print(b)
print(c)
print(d)

As you can see here, it needs to be preloaded so it nows how many numbers are left for c*

And I think that's the same as in your code, as soon as a code line is started its preloading everything

Sorry don't know how to describe it better xD