Loosing timezone information

[williamzeni99]

Hi!
I get a strange output from a doc file.

If I execute this command

williamzeni@pop-os:~$ exiftool -d '%Y:%m:%d %H:%M:%S%z' -j -ModifyDate "/home/williamzeni/Desktop/export-20241204144843/attachments/70be6d9775cb23874e03452972f494ecdcf0c2d92d7eb927820d50bbe7c5157c/CONTRATTO_POSCA_ZENI.doc"

[{
  "SourceFile": "/home/williamzeni/Desktop/export-20241204144843/attachments/70be6d9775cb23874e03452972f494ecdcf0c2d92d7eb927820d50bbe7c5157c/CONTRATTO_POSCA_ZENI.doc",
  "ModifyDate": "2024:09:18 08:52:00+0200"
}]

as you can see in ModifyDate I get the correct timezone offset. But it is not the same if I do the same command with python

from pathlib import Path
import exiftool
DATETIME_PARSE_FORMAT_EXIFTOOL = '%Y:%m:%d %H:%M:%S%z'

temp_file_path=Path("/home/williamzeni/Desktop/export-20241204144843/attachments/70be6d9775cb23874e03452972f494ecdcf0c2d92d7eb927820d50bbe7c5157c/CONTRATTO_POSCA_ZENI.doc")

with exiftool.ExifTool() as et:
    res = et.execute("-d", DATETIME_PARSE_FORMAT_EXIFTOOL, "-j", "-ModifyDate", str(temp_file_path))  # Execute the command and unpack the list


print(res)

I get this result:

[{
  "SourceFile": "/home/williamzeni/Desktop/export-20241204144843/attachments/70be6d9775cb23874e03452972f494ecdcf0c2d92d7eb927820d50bbe7c5157c/CONTRATTO_POSCA_ZENI.doc",
  "FlashPix:ModifyDate": "2024:09:18 08:52:00"
}]

as you can see the python library loses the timezone offset. It is happening just with this file, and not with others I tested since now (mostly pdfs).

For instance, same script but different file

[{
  "SourceFile": "/home/williamzeni/Documents/pyfet/tests/NGI3R5_241018175620393.pdf",
  "PDF:ModifyDate": "2024:10:18 17:56:20+02:00"
}]

What is happening?