code: def entry_point():
      
      try:
          mainret = main()
      except (EOFError, KeyboardInterrupt):
          print_err('\nUser cancelled.\n')
          mainret = 2
      except BrokenPipeError:
          print_err('\nBroken pipe, input/output was interrupted.\n')
          mainret = 3
      except InvalidArg as exarg:
          handle_err(exarg.as_colr())
          mainret = 4
      except ValueError as exnum:
          handle_err(exnum)
          mainret = 4
  
      sys.exit(mainret)
docs: An entry point for setuptools. This is required because
          `if __name__ == '__main__'` is not fired when the entry point
          is 'main()'. This just wraps the old behavior in a function so
          it can be called from setuptools.