Guys what is Perform first can you help me (a , b = b , a+b)

Answer 1

Markus Kaleton i confused in Fibonacci Step

because if i use
a = b
b = a+b
the result is wrong

but if i use
a,b=b,a+b
the result is correct

why?😐

Answer 2

because the assignments on the line are executed at the same time.
so in the a,b version
a = 1 , b = 2 prints 1
|
a = 2 , b = 3 prints 2
|
a = 3 , b = 5 prints 3

but in the two line version the assignment of a happens in the previous line so it doesnt happen at the same time so
a = 1 , b = 2 prints 1
/
/
a = 2 , b = 4 prints 2
/
/
a = 4 , b = 8

hope that helps.
basically the second one does two assignments where the first one does only one
draw it on paper, it might help understand

Answer 3

'b' is assigned to 'a' variable
'a+b' is assigned to 'b' variable

but it is a simultaneous assignment of values

fibonacci?