code: def K2onSilicon_main(args=None):
      
      import argparse
      parser = argparse.ArgumentParser(
          description="Run K2onSilicon to find which targets in a "
                      "list call on active silicon for a given K2 campaign.")
      parser.add_argument('csv_file', type=str,
                          help="Name of input csv file with targets, column are "
                               "Ra_degrees, Dec_degrees, Kepmag")
      parser.add_argument('campaign', type=int, help='K2 Campaign number')
      args = parser.parse_args(args)
      K2onSilicon(args.csv_file, args.campaign)
docs: Function called when `K2onSilicon` is executed on the command line.