import sys
sys.path.insert(0, '/u/t/dev/screed')
import screed
from screed.fastq import fastq_iter

for n, record in enumerate(fastq_iter(open(sys.argv[1]))):
   if n % 10000 == 0:
      print>>sys.stderr, '...', n
        
   sequence = record['sequence']
   name = record['name']

   if 'N' in sequence:
      continue

   print ">" + name
   print sequence