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gh-140392: Add application MIME types in Lib/mimetypes.py #140393

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Add `application` MIME types in Lib/mimetypes.py
clin1234 Oct 20, 2025
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Add `application` MIME types in Lib/test/test_mimetypes.py
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Add new application media types in 3.15 release
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14 changes: 14 additions & 0 deletions Doc/whatsnew/3.15.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -695,6 +695,20 @@ mimetypes
* Add ``application/toml``. (Contributed by Gil Forcada in :gh:`139959`.)
* Rename ``application/x-texinfo`` to ``application/texinfo``.
(Contributed by Charlie Lin in :gh:`140165`)
* Add the following:
- ``application/efi``
- ``application/pem-certificate-chain``
- ``application/pgp-keys``
- ``application/sql``
- ``application/zstd``
- ``application/ocsp-request``
- ``application/ocsp-response``
- ``application/mathematica``
- ``application/mathml+xml``
- ``application/mbox``
- ``application/pem-certificate-chain``

(Contributed by Charlie Lin in :gh:`140393`)


pathlib
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13 changes: 13 additions & 0 deletions Lib/mimetypes.py
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Expand Up @@ -477,10 +477,16 @@ def _default_mime_types():
types_map = _types_map_default = {
'.js' : 'text/javascript',
'.mjs' : 'text/javascript',
'.efi' : 'application/efi',
'.epub' : 'application/epub+zip',
'.gz' : 'application/gzip',
'.json' : 'application/json',
'.webmanifest': 'application/manifest+json',
'.nb' : 'application/mathematica',
'.ma' : 'application/mathematica',
'.mb' : 'application/mathematica',
'.mml' : 'application/mathml+xml',
'.mbox' : 'application/mbox',
'.doc' : 'application/msword',
'.dot' : 'application/msword',
'.wiz' : 'application/msword',
Expand All @@ -493,13 +499,19 @@ def _default_mime_types():
'.o' : 'application/octet-stream',
'.obj' : 'application/octet-stream',
'.so' : 'application/octet-stream',
'.ors' : 'application/ocsp-response',
'.orq' : 'application/ocsp-request',
'.oda' : 'application/oda',
'.ogx' : 'application/ogg',
'.pdf' : 'application/pdf',
'.pem' : 'application/pem-certificate-chain',
'.asc' : 'application/pgp-keys',
'.p7c' : 'application/pkcs7-mime',
'.ps' : 'application/postscript',
'.ai' : 'application/postscript',
'.eps' : 'application/postscript',
'.rfcxml' : 'application/rfc+xml',
'.sql' : 'application/sql',
'.texi' : 'application/texinfo',
'.texinfo': 'application/texinfo',
'.toml' : 'application/toml',
Expand Down Expand Up @@ -566,6 +578,7 @@ def _default_mime_types():
'.yaml' : 'application/yaml',
'.yml' : 'application/yaml',
'.zip' : 'application/zip',
'.zst' : 'application/zstd',
'.3gp' : 'audio/3gpp',
'.3gpp' : 'audio/3gpp',
'.3g2' : 'audio/3gpp2',
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13 changes: 13 additions & 0 deletions Lib/test/test_mimetypes.py
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Expand Up @@ -225,11 +225,23 @@ def test_guess_known_extensions(self):
def test_preferred_extension(self):
def check_extensions():
for mime_type, ext in (
('applicaion/efi', '.efi'),
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I know we (and especially me!) have been adding new MIME types to this test, but I'm now thinking there's not much point, we're essentially duplicating types_map in reverse.

It's useful to have some in here, to test the lookup works, but we don't really need all.

When we have multiple extensions (for example, application/mathematica has .ma, .mb and .na), maybe it's useful to include the test to show which extension it returns.

I'm not suggesting removing all existing ones, but shall we remove the new ones here, other than for application/mathematica?

("application/epub+zip", ".epub"),
('application/json', '.json'),
('application/manifest+json', '.webmanifest'),
('application/mathematica', '.nb'),
('application/mathml+xml', '.mml'),
('application/mbox', '.mbox'),
("application/octet-stream", ".bin"),
("application/gzip", ".gz"),
('application/ocsp-response', '.ors'),
('application/ocsp-request', '.orq'),
('application/pem-certificate-chain', '.pem'),
('application/pgp-keys', '.asc'),
("application/ogg", ".ogx"),
("application/postscript", ".ps"),
('application/rfc+xml', '.rfcxml'),
('application/sql', '.sql'),
("application/texinfo", ".texi"),
("application/toml", ".toml"),
("application/vnd.apple.mpegurl", ".m3u"),
Expand All @@ -251,6 +263,7 @@ def check_extensions():
("application/x-troff", ".roff"),
("application/xml", ".xsl"),
("application/yaml", ".yaml"),
('application/zstd', '.zst'),
("audio/flac", ".flac"),
("audio/matroska", ".mka"),
("audio/mp4", ".m4a"),
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12 changes: 12 additions & 0 deletions Misc/NEWS.d/next/Library/2025-10-21-16-39-58.gh-issue-140392.ouL6FW.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
Add the following MIME types:

- ``application/efi``
- ``application/mathematica``
- ``application/mathml+xml``
- ``application/mbox``
- ``application/ocsp-request``
- ``application/ocsp-response``
- ``application/pem-certificate-chain``
- ``application/pgp-keys``
- ``application/sql``
- ``application/zstd``
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