code: def allpathsX(args):
      
      p = OptionParser(allpathsX.__doc__)
      opts, args = p.parse_args(args)
  
      if len(args) != 2:
          sys.exit(not p.print_help())
  
      folder, tag = args
      tag = tag.split(",")
      for p, pf in iter_project(folder):
          assemble_pairs(p, pf, tag)
docs: %prog allpathsX folder tag
  
      Run assembly on a folder of paired reads and apply tag (PE-200, PE-500).
      Allow multiple tags separated by comma, e.g. PE-350,TT-1050