GoF design pattern with Python - Iterator

iterator.py

# -*- coding: utf-8 -*-

"""http://ginstrom.com/scribbles/2007/10/08/design-patterns-python-style/

Implementation of the iterator pattern with a generator"""


def count_to(count):
	"""Counts by word numbers, up to a maximum of five"""
	numbers = ["one", "two", "three", "four", "five"]
	# enumerate() returns a tuple containing a count (from start which
	# defaults to 0) and the values obtained from iterating over sequence
	for pos, number in zip(range(count), numbers):
		yield number


# Test the generator
count_to_two = lambda: count_to(2)
count_to_five = lambda: count_to(5)

print('Counting to two...')
for number in count_to_two():
	print(number, end=' ')

print()

print('Counting to five...')
for number in count_to_five():
	print(number, end=' ')

print()
### OUTPUT ###
# Counting to two...
# one two
# Counting to five...
# one two three four five