Fibonacci series

Answer 1

Fibonacci series is getting the next number by adding the 2 before it.. this is what I wrote for it. keeps it simple and easy to understand

a=0
b=1

for i in range(7):
print(a, end=' ')
print(b, end=' ')
a=b+a
b=b+a

Answer 2

from math import sqrt
def F(n):
return ((1+sqrt(5))**n-(1-sqrt(5))**n)/(2**n*sqrt(5))

very fast version but if you follow deffiniton:
def SubFib(startNumber, endNumber):
for cur in F():
if cur > endNumber: return
if cur >= startNumber: yield cur
for i in SubFib(10, 200):
print i