def test1():
count = 0
for i in sieve.prime_tester():
print i
count += 1
if count >= 10:
assert i == 31
break
def test2():
p = sieve.prime_tester()
i = iter(p)
assert i.next() == 2
import sieve
count = 0
for i in sieve.prime_tester():
print i
count += 1
if count >= 5:
assert i == 13
break
