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Code Issues Projects Releases Packages Wiki Activity Actions 9

gh-132054: Add `application/yaml to mimetypes` (#132056)

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Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
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Саша Черных 2025-04-21 12:05:37 +03:00 • committed by GitHub
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4
Doc/whatsnew/3.14.rst
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@ -910,6 +910,10 @@ mimetypes
(Contributed by Hugo van Kemenade in :gh:`129965`.) (Contributed by Hugo van Kemenade in :gh:`129965`.)
* Add :rfc:`9512` ``application/yaml`` MIME type for YAML files (``.yaml``
and ``.yml``). (Contributed by Sasha "Nelie" Chernykh and Hugo van Kemenade
in :gh:`132056`.)
multiprocessing multiprocessing
--------------- ---------------

2
Lib/mimetypes.py
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@ -544,6 +544,8 @@ def _default_mime_types():
'.rdf' : 'application/xml', '.rdf' : 'application/xml',
'.wsdl' : 'application/xml', '.wsdl' : 'application/xml',
'.xpdl' : 'application/xml', '.xpdl' : 'application/xml',
'.yaml' : 'application/yaml',
'.yml' : 'application/yaml',
'.zip' : 'application/zip', '.zip' : 'application/zip',
'.3gp' : 'audio/3gpp', '.3gp' : 'audio/3gpp',
'.3gpp' : 'audio/3gpp', '.3gpp' : 'audio/3gpp',

21
Lib/test/test_mimetypes.py
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@ -243,6 +243,7 @@ class MimeTypesTestCase(unittest.TestCase):
("application/x-texinfo", ".texi"), ("application/x-texinfo", ".texi"),
("application/x-troff", ".roff"), ("application/x-troff", ".roff"),
("application/xml", ".xsl"), ("application/xml", ".xsl"),
("application/yaml", ".yaml"),
("audio/flac", ".flac"), ("audio/flac", ".flac"),
("audio/matroska", ".mka"), ("audio/matroska", ".mka"),
("audio/mp4", ".m4a"), ("audio/mp4", ".m4a"),
@ -285,6 +286,26 @@ class MimeTypesTestCase(unittest.TestCase):
mimetypes.init() mimetypes.init()
check_extensions() check_extensions()
def test_guess_file_type(self):
def check_file_type():
for mime_type, ext in (
("application/yaml", ".yaml"),
("application/yaml", ".yml"),
("audio/mpeg", ".mp2"),
("audio/mpeg", ".mp3"),
("video/mpeg", ".m1v"),
("video/mpeg", ".mpe"),
("video/mpeg", ".mpeg"),
("video/mpeg", ".mpg"),
):
with self.subTest(mime_type=mime_type, ext=ext):
result, _ = mimetypes.guess_file_type(f"filename{ext}")
self.assertEqual(result, mime_type)
check_file_type()
mimetypes.init()
check_file_type()
def test_init_stability(self): def test_init_stability(self):
mimetypes.init() mimetypes.init()

2
Misc/NEWS.d/next/Library/2025-04-03-20-28-54.gh-issue-132054.c1nlOx.rst Normal file
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@ -0,0 +1,2 @@
The ``application/yaml`` mime type (:rfc:`9512`) is now supported
by :mod:`mimetypes`. Patch by Sasha "Nelie" Chernykh and Hugo van Kemenade.