from euler import primesBelow print len(list(primesBelow(1000000)))
from euler import primesBelow
from time import time
s = time()
digits = {str(x) for x in {1, 3, 5, 7, 9}}
primes = {x for x in primesBelow(1000000) if set(str(x)) <= digits}
powers = [10 ** x for x in xrange(15)]
def circulars(n):
yield n
numlen = len(str(n)) - 1
for i in xrange(numlen):
lastDigit = n % 10
n /= 10
n += powers[numlen] * lastDigit
yield n
def isCircular(n):
return all(x in primes for x in circulars(n))
print len({x for x in primes if isCircular(x)})
print time() - s
from euler import primes, primesBelow from itertools import takewhile print sum(primesBelow(2000000))