for when the complete Content-Disposition header is missing.for when the ones that are present cannot be parsed or.for when neither the filename nor the filename* disposition parameter are present or.Sanitize filenames to prevent user confusion ( section 4.3 mentions replacing "control characters and leading and trailing whitespace") Produce "save" filename extensions "optimally matching the media type of the received payload" (see section 4.3) Sanitize values so that they don't contain directory names or other path elements except for a single filename, so storing with that name won't cause files to be created or overwritten at arbitrary locations What it doesn't have to handle (but if it does, even better) as I can do that myself: provide a function accepting the all the same parameters as requests.get that performs the request, and returns the response as well as the filename (if there is one).provide a function that extracts and returns the proper filename (if there is one) from a passed Content-Disposition header field value (a string).provide a function that extracts and returns the proper filename (if there is one) from a passed requests response.Is there a Python library that can do this? Requirements
I could implement the parsing of the Content-Disposition header I get from requests accordingly myself, but if I can avoid it and use an existing proven implementation instead, I'd prefer that. Thus, for the examples listed in the RFC, I'd want the following results: -Ĭontent-Disposition: Attachment filename=example.htmlįilename: example.html Content-Disposition: INLINE FILENAME= "an example.html"įilename: an example.html Content-Disposition: attachment įilename: € rates Content-Disposition: attachment įilename: € rates here, too (not EURO rates, as filename* takes precedence) The value of filename*, though, is yet a bit more complicated than the one of filename.Īlso, the RFC seems to allow for additional whitespace around the =.
Assuming you have Python 3 installed to your local environment, create a directory mkdir download-images-python and add in a requestspythonimgdl. Many developers consider it a convenient method for downloading any file type in Python. When both "filename" and "filename*" are present in a single header field value, SHOULD pick "filename*" and ignore "filename". Being the most popular HTTP client in Python, the Requests package is elegant and easy to use for beginners. "the report.pdf") and escape sequences (the latter are discouraged, though, thus their handling isn't a hard requirement for me). the_report.pdf) or a quoted string that can also contain whitespace (e.g. ' dialog.Įasy, right? I can just get it from the Content-Disposition HTTP header, accessible on the response object: import reīut looking more closely at this topic, it isn't that easy:Īccording to RFC 6266 section 4.3, and the grammar in the section 4.1, the value can be an unquoted token (e.g. For storing the file, I'd like to determine the filename they way a web browser would for its 'save' or 'save as. I download a file using the get function of Python requests library.