fibonacci test for generators in python

fibo.py

#!/usr/bin/env python
# encoding: utf-8
"""
fibonacci.py

RECURSIVE or GENERATOR?

Created by drambald on 2012-07-10.
Copyright (c) 2012 tucanosoftware.com. All rights reserved.
"""

import sys
import os
import time

def main_recursive():
    for x in range(30):
        print "fibonacci(%d) = %d" % (x, fibonacci(x))

# RECURSIVE
def fibonacci(n):
    if n < 2: 
        return n
    else:
        return fibonacci(n - 1) + fibonacci(n - 2)

def main_generator():
    f  = fiboyield()
    for x in range(30):
        print "fibonacci: %d" % f.next()

# GENERATOR
def fiboyield():
    x,y = 0,1
    while True:
        yield x
        x, y = y, x + y

# RUN RUN RUN
start_time = time.time()
main_recursive()
print time.time() - start_time, "seconds"
new_time = time.time()
main_generator()
print time.time() - new_time, "seconds"