new_contents: #! /usr/bin/env python
  import screed, sys
  
  fp = open('summary.txt', 'w')
  
  total_bp = 0
  total_seqs = 0
  for m, filename in enumerate(sys.argv[1:]):
     print 'opening', filename
     file_bp = 0
  
     for n, record in enumerate(screed.open(filename)):
        if n % 100000 == 0 and n > 0:
           print '... %d, in %s -- %d of %d files' % (n, filename, m, len(sys.argv) - 1)
        file_bp += len(record.sequence)
  
     file_seqs = n
  
     print >>fp, '%d %d %s' % (file_seqs, file_bp, filename)
  
     total_bp += file_bp
     total_seqs += file_seqs
  
  print >>fp, '%d %d %s' % (total_seqs, total_bp, 'total')
  
subject: read summary foo