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content_length = header.get('content-length', None)
PYTHON DOWNLOAD FILE WITH REQUESTS CODE
By inspecting the header of the request URL on the content-length property, the code below can work as expected. We might have another restriction on the downloading resource, for example, just downloading the file which the size is not greater than 100 MB. Restricting the file size of the downloading resource H = requests.head(_url, allow_redirects=True)Ĭontent_type = header.get('content-type')Īpplying this function for the two URLs in the previous examples, it returns False for Youtube URL while True is returned with Google’s icon link. def is_downloadable(_url):ĭoes the url contain a downloadable resource The function below can do what we need by checking the content type from the header. Checking Content-Type of the request header Define a function to verify a downloadable resourceĪs explained in the previous section, checking a resource allowed to download is necessary before sending a request. In other words, the content type of a request is text/html which we just download a plain text or HTML document instead of well-known mime types such as image/png, video/mp4, etc. In the above example, what we are expecting from the Youtube URL is a video type rather than text/html while the first URL returns an expected value. The extract_content_type function returns a string as the mime type of the remote file. The output of the script above looks like image/png # open("google.ico", "wb").write(r.content) R = requests.get(_url, allow_redirects=True)
PYTHON DOWNLOAD FILE WITH REQUESTS HOW TO
A snippet below simulates how to check that based on the Content-Type parameter of the header of the requesting URL. Therefore, it is important to check whether the resource of interest is allowed to download or not before sending a request. People developers browser extensions or standalone applications to download Youtube videos, however, Google has detected such violent activities and increasingly protected their data. For example, Youtube videos have been secured to prevent users from greedily downloading. The real world is you almost certainly handle circumstances where the resources in downloading are protected not allow users to download. Not all URLs pointing to downloadable resources It’s easy as a piece of cake, right? In practice, we have to face more difficult situations that I am gonna show you now.
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The file named google.ico is saved into the current working directory. Open("google.ico", "wb").write(r.content) R = requests.get(url, allow_redirects=True)
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