x,x = y,y

Question

x=1
y4
x,x = y,y
print(x+y)

Can someone explain this?

Answer 1

The output is:

name 'y4' is not defined

... because on second line you must probably write y=4 ^^
After having correted it, the output is '8' because on third line you assign the value of y to x twice ( one first time, and another with the same statement ), so x==4 and also y, and on last line you print the sum of x and y == 4+4 == 8 :P

Answer 2

your code shouldn't work. however if you want to understand what a,b=b,a means check this exemple :
a=1
b=2
a,b=b,a
in this exemple 'a' will be equal to 2 and 'b' will be equal to 1.

name,family,age='Gandalf','Grey',572
is the same as :
name="Gandalf"
family="Grey"
age=572

Answer 3

So what's the output?

cause i got that code from challenge so i dont know the right answer