1. import argparse
  3. def create_dry_run_parser(parser):
  4. """
  5. Adds dry-run options to an argparse parser with fallback logic.
  6. """
  7. # Define the dry-run option
  8. parser.add_argument(
  9. "--dry-run",
  10. action="store_true",
  11. help="Perform a dry run; do not make changes.",
  12. )
  14. # Define a fallback option
  15. parser.add_argument(
  16. "--safe",
  17. action="store_true",
  18. help="Perform a safe operation; checks for potential errors.",
  19. )
  21. #Example of handling a field with a default value and a dry-run override
  22. parser.add_argument(
  23. "--verbose",
  24. action="store_true",
  25. help="Enable verbose output.",
  26. default=False
  27. )
  29. return parser
  31. if __name__ == "__main__":
  32. parser = argparse.ArgumentParser(description="Example CLI with dry-run options.")
  33. parser = create_dry_run_parser(parser)
  35. args = parser.parse_args()
  37. if args.dry_run:
  38. print("Dry run mode enabled. No changes will be made.")
  39. elif args.safe:
  40. print("Safe mode enabled. Checking for potential errors.")
  41. else:
  42. print("Normal mode.")
  44. print(f"Verbose mode: {args.verbose}")

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