What is wrong in the condition.. Python fibbonacci series!!??

Question

a=0
b=1
n=60
While a<n:
print(a, b)
a+=b
b+=a
.
.
.
It is going infinite...

Answer 1

x=0
y=1
z=10
for x in range(z):
print(x,y)
x+=y
y+=x