1. import datetime
  3. def deserialize_timestamps(timestamps, version=None):
  4. """
  5. Deserializes timestamps from a string or list, supporting older versions.
  7. Args:
  8. timestamps (str or list): String of comma-separated timestamps or a list of datetime objects.
  9. version (int, optional): Version of the timestamp format. Defaults to None.
  11. Returns:
  12. list: A list of datetime objects. Returns an empty list if input is invalid.
  13. """
  14. if isinstance(timestamps, str):
  15. try:
  16. timestamp_strings = timestamps.split(',')
  17. timestamps_list = []
  18. for ts_str in timestamp_strings:
  19. ts_str = ts_str.strip()
  20. if ts_str: # Avoid empty strings
  21. try:
  22. # Attempt to parse as ISO format (version 1)
  23. dt = datetime.datetime.fromisoformat(ts_str.replace('Z', '+00:00'))
  24. timestamps_list.append(dt)
  25. except ValueError: #Handle older formats
  26. try:
  27. #Attempt to parse as a simple string format (version 0)
  28. dt = datetime.datetime.strptime(ts_str, "%Y-%m-%d %H:%M:%S")
  29. timestamps_list.append(dt)
  30. except ValueError:
  31. print(f"Invalid timestamp format: {ts_str}")
  32. return [] # Return empty list on error
  33. return timestamps_list
  34. except Exception:
  35. return []
  36. elif isinstance(timestamps, list):
  37. timestamps_list = []
  38. for ts in timestamps:
  39. if isinstance(ts, str):
  40. try:
  41. dt = datetime.datetime.fromisoformat(ts.replace('Z', '+00:00'))
  42. timestamps_list.append(dt)
  43. except ValueError:
  44. try:
  45. dt = datetime.datetime.strptime(ts, "%Y-%m-%d %H:%M:%S")
  46. timestamps_list.append(dt)
  47. except ValueError:
  48. print(f"Invalid timestamp format: {ts}")
  49. return []
  50. elif isinstance(ts, datetime.datetime):
  51. timestamps_list.append(ts)
  52. else:
  53. print(f"Invalid timestamp type: {type(ts)}")
  54. return []
  55. return timestamps_list
  56. else:
  57. print("Invalid input type. Must be string or list.")
  58. return [] # Return empty list on error
  63. if __name__ == '__main__':
  64. # Example Usage
  65. timestamps_str = "2023-10-26 10:00:00,2023-10-27 12:30:00"
  66. timestamps_list = [datetime.datetime(2023, 10, 26, 10, 0, 0), datetime.datetime(2023, 10, 27, 12, 30, 0)]
  67. timestamps_mixed = ["2023-10-26 10:00:00", datetime.datetime(2023, 10, 27, 12, 30, 0)]
  69. deserialized_str = deserialize_timestamps(timestamps_str)
  70. deserialized_list = deserialize_timestamps(timestamps_list)
  71. deserialized_mixed = deserialize_timestamps(timestamps_mixed)
  74. print(f"Deserialized string: {deserialized_str}")
  75. print(f"Deserialized list: {deserialized_list}")
  76. print(f"Deserialized mixed: {deserialized_mixed}")
  78. #Example with invalid input
  79. invalid_timestamps = "2023-10-26 10:00:00,invalid-date"
  80. invalid_result = deserialize_timestamps(invalid_timestamps)
  81. print(f"Invalid timestamps result: {invalid_result}")

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