code: def checkArgs(args):
      
      # Check if we have the tped and the tfam files
      for filename in [args.bfile + i for i in [".bed", ".bim", ".fam"]]:
          if not os.path.isfile(filename):
              raise ProgramError("{}: no such file".format(filename))
  
      # Checking that the raw directory exists
      if not os.path.isdir(args.raw_dir):
          raise ProgramError("{}: no such directory".format(args.raw_dir))
  
      return True
docs: Checks the arguments and options.
  
      :param args: an object containing the options of the program.
  
      :type args: argparse.Namespace
  
      :returns: ``True`` if everything was OK.
  
      If there is a problem with an option, an exception is raised using the
      :py:class:`ProgramError` class, a message is printed to the
      :class:`sys.stderr` and the program exists with code 1.