1. def validate_lists(lists, expected_length):
  2. """
  3. Validates a list of lists to ensure they all have the expected length.
  4. Handles failures gracefully without async logic.
  6. Args:
  7. lists: A list of lists to validate.
  8. expected_length: The expected length of each inner list.
  10. Returns:
  11. A list of validation errors. Empty list if all lists are valid.
  12. """
  13. errors = []
  14. for i, lst in enumerate(lists):
  15. if not isinstance(lst, list):
  16. errors.append(f"Error: Element at index {i} is not a list.")
  17. continue
  18. if len(lst) != expected_length:
  19. errors.append(f"Error: List at index {i} has length {len(lst)}, expected {expected_length}.")
  20. return errors
  22. if __name__ == '__main__':
  23. # Example usage
  24. list1 = [1, 2, 3]
  25. list2 = [4, 5, 6]
  26. list3 = [7, 8]
  28. lists = [list1, list2, list3]
  29. expected_length = 3
  31. errors = validate_lists(lists, expected_length)
  33. if errors:
  34. print("Validation Errors:")
  35. for error in errors:
  36. print(error)
  37. else:
  38. print("All lists are valid.")
  40. #Example with invalid type
  41. lists = [list1, "not a list", list2]
  42. expected_length = 3
  43. errors = validate_lists(lists, expected_length)
  45. if errors:
  46. print("Validation Errors:")
  47. for error in errors:
  48. print(error)
  49. else:
  50. print("All lists are valid.")

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