Ok I add the attachment now, I will be more concise.
I have a script that extracts all PDF in base64 from database and convert them,
then I cancel someone and one other script (Python) rename them. But you can
see it also from the GUI, I send the attachment video and I will paste below
the script that renames, I can't insert the script which extracts from the
production database for obvious reason.
How you can see in the video, I delete a file, rename one other and It restores
the old preview.
Remember that everything has an incremental count at the end, and the same
name, like example_1, example_2, example_3 ....
import os
import re
import sys
BASE_DIR: str = os.path.dirname(os.path.abspath(__file__))
FOLDER_PDF: str = os.path.join(BASE_DIR, "test")
def rename_pdfs_in_folder(folder: str, folder_path: str) -> int:
pattern: re.Pattern[str] = re.compile(rf"^{re.escape(folder)}_(\d+)\.pdf$")
pdf_files: list[tuple[int, str]] = []
for f in os.listdir(folder_path):
m: re.Match[str] | None = pattern.match(f)
if m:
pdf_files.append((int(m.group(1)), f))
if not pdf_files:
return 0
pdf_files.sort(key=lambda x: x[0])
rename_count = 0
for new_idx, (_, old_name) in enumerate(pdf_files, start=1):
new_name: str = f"{folder}_{new_idx}.pdf"
old_path: str = os.path.join(folder_path, old_name)
new_path: str = os.path.join(folder_path, new_name)
if old_name != new_name:
print(f" Rinomino: {old_name} -> {new_name}")
os.rename(old_path, new_path)
rename_count += 1
return rename_count
def main() -> None:
if not os.path.isdir(FOLDER_PDF):
print(f"Folder {FOLDER_PDF} doesn't found")
sys.exit(1)
supplier_dirs: list[str] = sorted(
d for d in os.listdir(FOLDER_PDF)
if os.path.isdir(os.path.join(FOLDER_PDF, d))
)
if not supplier_dirs:
print("No subfolders found")
sys.exit(0)
total = sum(
rename_pdfs_in_folder(folder, os.path.join(FOLDER_PDF, folder))
for folder in supplier_dirs
)
print(f"\nRenamed {total} file.")
if __name__ == "__main__":
main()
** Attachment added: "Screencast From 2026-06-08 21-28-49.mp4"
https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/2155631/+attachment/5976225/+files/Screencast%20From%202026-06-08%2021-28-49.mp4
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https://bugs.launchpad.net/bugs/2155631
Title:
Error of preview of PdF
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