1 #! /usr/bin/env python 2 3 # Print prime numbers in a given range 4 5 def primes(min, max): 6 if max >= 2 >= min: 7 print 2 8 primes = [2] 9 i = 3 10 while i <= max: 11 for p in primes: 12 if i % p == 0 or p*p > i: 13 break 14 if i % p != 0: 15 primes.append(i) 16 if i >= min: 17 print i 18 i += 2 19 20 def main(): 21 import sys 22 min, max = 2, 0x7fffffff 23 if sys.argv[1:]: 24 min = int(sys.argv[1]) 25 if sys.argv[2:]: 26 max = int(sys.argv[2]) 27 primes(min, max) 28 29 if __name__ == "__main__": 30 main() 31
