can someone explain to me this python code. This is a code for Fibonacci sequence
while b

Question

can someone explain to me this python code. This is a code for Fibonacci sequence
while b < 50:
    print(b)
    a, b = b, a + b

anonymous · Answer

a, b = 0, 1

anonymous · Answer

I have a link you can check out that might help you try this link it explains about Fibonacci sequence http://www.youtube.com/watch?v=Dq7ORUWwSMg&feature=c4-overview-vl&list=PL41C4760954570944

e.mccormick · Answer

Python has the ability to do multiple assignment.  It also fully evaluates the right hand side of the = before doing multiple assignment.  Therefore, the swap function in Python is very easy:

a,b=b,a

This is what allows the a, b = b, a + b part of that code to work.  The right hand side of b, a + b is evaluated fully and stored.  Then a, b is changed to point at the new values, and the old values having nothing pointing at them go by-by.