The documentation says that guess_type() takes a URL, but:>>> mimetypes.guess_type("http://example.com")('application/x-msdownload', None)I suspect the MS download is a reference to *.com files (like DOS's command.com). My current workaround is to strip out the host name from the URL, since I cannot imagine it would be useful for determining the content type. I am also stripping the fragment part. An argument could probably be made for stripping the “;parameters” and “?query” parts as well.>>> # Workaround for mimetypes.guess_type("//example.com")... # interpreting host name as file name... url = urlparse("http://example.com")>>> url = net.url_replace(url, netloc="", fragment="")>>> url'http://'>>> mimetypes.guess_type(url, strict=False)(None, None)

Posting a patch to fix this. It passes the URL through a urlsplit() → urlunsplit() stage, while removing the scheme://netloc parts.

The proposed patch I mentioned onbpo-35939 also solve the above situation.Python 3.8.0a1+ (heads/bpo-12317:96d37dbcd2, Feb  8 2019, 12:03:40)[Clang 9.1.0 (clang-902.0.39.1)] on darwinType "help", "copyright", "credits" or "license" for more information.>>> import mimetypes>>> mimetypes.guess_type("http://example.com")(None, None)>>> mimetypes.guess_type("example.com")('application/x-msdownload', None)>>>I've also added the unit tests of mimetypes-host.patch. It works well.I think that we close this issue also when thebpo-35939 is closed.Thanks alot!

New changeset87bd2071c756188b6cd577889fb1682831142ceb by Miss Islington (bot) (Dong-hee Na) in branch 'master':bpo-22347: Update mimetypes.guess_type to allow proper parsing of URLs (GH-15522)https://github.com/python/cpython/commit/87bd2071c756188b6cd577889fb1682831142ceb

New changeset6d7a786d2e4b48a6b50614e042ace9ff996f0238 by Miss Islington (bot) in branch '3.8':bpo-22347: Update mimetypes.guess_type to allow proper parsing of URLs (GH-15522)https://github.com/python/cpython/commit/6d7a786d2e4b48a6b50614e042ace9ff996f0238

New changeset8873bff2871078e9f23e6c7d942d3a8edbd0921f by Miss Islington (bot) (Dong-hee Na) in branch '3.7':[3.7]bpo-22347: Update mimetypes.guess_type to allow proper parsing of URLs (GH-15522) (GH-15687)https://github.com/python/cpython/commit/8873bff2871078e9f23e6c7d942d3a8edbd0921f

@vstinner(my mentor) @maxkingNow this issue is solved.I'd like to close this issue. Is it okay?

I think so, yes.Also, while you are at it, can you also closebpo-35939 with a comment that points to this issue and the right PR for the fix?

Great! I will closebpo-35939 also.

This change introduces a potential 3.7 regression; seeIssue38449.

New changeset19a3d873005e5730eeabdc394c961e93f2ec02f0 by Miss Islington (bot) (Abhilash Raj) in branch 'master':bpo-38449: Revert "bpo-22347: Update mimetypes.guess_type to allow oper parsing of URLs (GH-15522)" (GH-16724)https://github.com/python/cpython/commit/19a3d873005e5730eeabdc394c961e93f2ec02f0

I am going to re-open this since the fixes were reverted in all the branches.

New changeset5a638a805503131f4a9cc2bbc5944611295c1500 by Abhilash Raj in branch '3.8':[3.8]bpo-38449: Revert "bpo-22347: Update mimetypes.guess_type to allow oper parsing of URLs" (GH-16724) (GH-16728)https://github.com/python/cpython/commit/5a638a805503131f4a9cc2bbc5944611295c1500

New changeset164bee296ab1f87cc05566b39ee8fb9fb64b3e5a by Miss Islington (bot) (Abhilash Raj) in branch '3.7':[3.7]bpo-38449: Revert "bpo-22347: Update mimetypes.guess_type to allow oper parsing of URLs (GH-15685)" (GH-16724) (GH-16727)https://github.com/python/cpython/commit/164bee296ab1f87cc05566b39ee8fb9fb64b3e5a

New changeset2a405598bbccbc42710dc5ecf3d44c8de4c16582 by Ned Deily (Abhilash Raj) in branch '3.7':[3.7]bpo-38449: Revert "bpo-22347: Update mimetypes.guess_type to allow oper parsing of URLs (GH-15685)" (GH-16724) (GH-16727)https://github.com/python/cpython/commit/2a405598bbccbc42710dc5ecf3d44c8de4c16582