"""Parse the filename from a url.
        Args:
            url: Url to parse the filename from.
        Returns:
            The filename.
        """
        if (url_path := Path(url)) and url_path.suffix == ".pdf":
            return url_path.name
        else:
            return self._parse_filename_from_url(url)
    def _parse_filename_from_url(self, url: str) -> str:
        """Parse the filename from a url.
        Args:
            url: Url to parse the filename from.
        Returns:
            The filename.
        Raises:
            ValueError: If the filename could not be parsed.
        """
        filename_matches = re.search(r"filename%2A%3DUTF-8%27%27(.+)", url)
        if filename_matches:
            filename = filename_matches.group(1)
        else:
            raise ValueError(f"Could not parse filename from {url}")
        if ".pdf" not in filename:
            raise ValueError(f"Incorrect file type: {filename}")
        filename = filename.split(".pdf")[0] + ".pdf"
        filename = unquote(filename)
        filename = filename.replace("%20", " ")
        return filename
if __name__ == "__main__":
    loader = BlackboardLoader(
        "https://<YOUR BLACKBOARD URL"
        " HERE>/webapps/blackboard/content/listContent.jsp?course_id=_<YOUR COURSE ID"
        " HERE>_1&content_id=_<YOUR CONTENT ID HERE>_1&mode=reset",
        "<YOUR BBROUTER COOKIE HERE>",
        load_all_recursively=True,
    )
    documents = loader.load()
    print(f"Loaded {len(documents)} pages of PDFs from {loader.web_path}")
By Harrison Chase
rtdocs_stable/api.python.langchain.com/en/stable/_modules/langchain/document_loaders/blackboard.html