The use of slash between strings in the source code?

[DenavDot]

download_path.mkdir(parents=True, exist_ok=True)
        filename = None
        try:
            response = self.requests.get(url, stream=True)
            if response.status_code == 404:
                raise MissingNetworkResourceError(url=url)
            elif response.status_code != 200:
                raise BadNetworkResourceError(url=url, status_code=response.status_code)

            # The initial URL might (read: will) go through URL redirects, so
            # we need the *final* response. We look at either the `Content-Disposition`
            # header, or the final URL, to extract the cache filename.
            cache_full_name = urlparse(response.url).path
            header_value = response.headers.get("Content-Disposition")
            if header_value:
                # See also https://tools.ietf.org/html/rfc6266
                value, parameters = parse_header(header_value)
                content_type = value.split(":", 1)[-1].strip().lower()
                if content_type == "attachment" and parameters.get("filename"):
                    cache_full_name = parameters["filename"]
            cache_name = cache_full_name.split("/")[-1]
            filename = download_path / cache_name

I'm trying to change the filename to something temporary and then renaming it to the original filename after a successful download.
though I don't understand why in the last line of this section, the strings have a / in the middle?

[mhsmith]

download_path is a Path object, so the slash is the equivalent of os.path.join.

[DenavDot]

Thanks!