# Write atomically – write to a temporary file then rename tmp_path = target_path.with_suffix(".tmp") try: with open(tmp_path, "wb") as f: f.write(content) tmp_path.replace(target_path) # atomic on POSIX, safe on Windows too finally: # Clean up any stray temp file on failure if tmp_path.exists(): tmp_path.unlink(missing_ok=True)
open_after_download: If ``True`` the file will be opened with the default system PDF viewer after a successful download (cross‑platform implementation). """ self.check_folder = pathlib.Path(check_folder).expanduser().resolve() self.expected_count = expected_count self.pdf_url = pdf_url self.save_folder = pathlib.Path(save_folder).expanduser().resolve() self.filename = filename or self._derive_filename_from_url(pdf_url) self.timeout = timeout self.verify_ssl = verify_ssl self.headers = "User-Agent": user_agent self.overwrite = overwrite self.open_after_download = open_after_download
# Basic validation (fail early) if not self.check_folder.is_dir(): raise NotADirectoryError(f"Check folder does not exist or is not a directory: self.check_folder") if only 2 by kedibone pdf download
filename: Desired filename (without path). If omitted, the filename is derived from the URL's last path component. If that component is missing or does not end in ``.pdf``, a safe default ``downloaded.pdf`` is used.
# ---------------------------------------------------------------------- # Core functionality # ---------------------------------------------------------------------- # Write atomically – write to a temporary
try: if sys.platform.startswith("darwin"): # macOS os.system(f'open "path"') elif sys.platform.startswith("win"): # Windows os.startfile(str(path)) # type: ignore[arg-type] # noqa: S607 else: # Linux / other *nix os.system(f'xdg-open "path"') except Exception as e: # Not fatal – we just inform the user print(f"⚠️ Could not open the PDF automatically: e", file=sys.stderr)
def __init__( self, *, check_folder: Union[str, os.PathLike], expected_count: int = 2, pdf_url: str, save_folder: Union[str, os.PathLike] = ".", filename: Optional[str] = None, timeout: Tuple[int, int] = (10, 30), verify_ssl: bool = True, user_agent: str = "ConditionalPdfDownloader/1.0 (+https://github.com/yourrepo)", overwrite: bool = False, open_after_download: bool = False, ) -> None: """ Parameters ---------- check_folder: Folder that will be inspected. Only its *direct* children are counted (files **and** sub‑directories). Symlinks are followed. If that component is missing or does not end in ``
user_agent: Custom User‑Agent header. Some sites block generic agents.
A tiny, self‑contained utility that:
Example:
Typical usage: