new_contents: #!/usr/bin/env python
  
  import argparse
  import os
  
  parser = argparse.ArgumentParser(description="Merge FASTQ files")
  parser.add_argument("-s", "--separator",
                      help="Filename separator",
                      default="_")
  parser.add_argument("-m", "--merge",
                      help="Section of the filename to merge",
                      type=int,
                      default=1)
  parser.add_argument("-o", "--outdir",
                      help="Path to output directory for merged files",
                      default=os.getcwd())
  parser.add_argument("fastqs",
                      metavar="FASTQ",
                      nargs="+",
                      help="FASTQ files to merge")
  args = parser.parse_args()
  
  print(args.fastqs)
  
subject: Set up option parsing