def test(self):
expected = [
1,
Fraction('3/2'),
Fraction('11/6'),
Fraction('25/12'),
Fraction('137/60'),
Fraction('49/20'),
Fraction('363/140'),
Fraction('761/280'),
Fraction('7129/2520'),
Fraction('7381/2520'),
]
self.assertEqual(list(take(10, tn.harmonic_numbers())), expected)
def test(self):
self.assertEqual(list(take(10, hn.hexagonal_numbers())),
[1, 6, 15, 28, 45, 66, 91, 120, 153, 190])
def reciprocal(number):
return Fraction(1, number)
fraction_example = Fraction(2, 3)
assert reciprocal(reciprocal(fraction_example)) == fraction_example
def strictly_positive_integers():
return count(1)
def strictly_positive_reciprocals():
return map(reciprocal, strictly_positive_integers())
def accumulated_strictly_positive_reciprocals():
return accumulate(strictly_positive_reciprocals())
harmonic_numbers = accumulated_strictly_positive_reciprocals
if __name__ == '__main__':
from itertoolsrecipes import take
number_to_show = 10
print('Harmonic Numbers; the first {}.'.format(number_to_show))
for n in take(number_to_show, accumulated_strictly_positive_reciprocals()):
print(n)
def test_simple(self):
self.assertEqual(list(itertoolsrecipes.take(3, range(5))), [0, 1, 2])
def test_cycling(self):
gen = badger.badger_mushroom_snake_generator()
first_loop = take(len(badger.full), gen)
second_loop = take(len(badger.full), gen)
self.assertEqual(first_loop, second_loop)