Fibonacci series contains numbers where each number is sum of previous two numbers. This type of series is generated using looping statement.
Example
x=0 y=1 fibo=0 while fibo<10: fibo=fibo+1 z=x+y print (z) x,y=y,z
Output
Above program print 10 numbers in Fibonacci series
1 2 3 5 8 13 21 34 55 89