https://github.com/python/cpython/commit/132b6bc98f47a4d897dead8635b5a50a0baee485
commit: 132b6bc98f47a4d897dead8635b5a50a0baee485
branch: main
author: Саша Черных <kristin...@users.noreply.github.com>
committer: hugovk <1324225+hug...@users.noreply.github.com>
date: 2025-04-21T12:05:37+03:00
summary:
gh-132054: Add ``application/yaml`` to ``mimetypes`` (#132056)
Co-authored-by: Adam Turner <9087854+aa-tur...@users.noreply.github.com>
Co-authored-by: Hugo van Kemenade <1324225+hug...@users.noreply.github.com>
files:
A Misc/NEWS.d/next/Library/2025-04-03-20-28-54.gh-issue-132054.c1nlOx.rst
M Doc/whatsnew/3.14.rst
M Lib/mimetypes.py
M Lib/test/test_mimetypes.py
diff --git a/Doc/whatsnew/3.14.rst b/Doc/whatsnew/3.14.rst
index f02ce6bc1d4f2f..51f4286efd6785 100644
--- a/Doc/whatsnew/3.14.rst
+++ b/Doc/whatsnew/3.14.rst
@@ -910,6 +910,10 @@ mimetypes
(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
---------------
diff --git a/Lib/mimetypes.py b/Lib/mimetypes.py
index 7c3e9c0d1159ba..de842eabea8093 100644
--- a/Lib/mimetypes.py
+++ b/Lib/mimetypes.py
@@ -544,6 +544,8 @@ def _default_mime_types():
'.rdf' : 'application/xml',
'.wsdl' : 'application/xml',
'.xpdl' : 'application/xml',
+ '.yaml' : 'application/yaml',
+ '.yml' : 'application/yaml',
'.zip' : 'application/zip',
'.3gp' : 'audio/3gpp',
'.3gpp' : 'audio/3gpp',
diff --git a/Lib/test/test_mimetypes.py b/Lib/test/test_mimetypes.py
index 261017f832a2af..f2a19c0863570a 100644
--- a/Lib/test/test_mimetypes.py
+++ b/Lib/test/test_mimetypes.py
@@ -243,6 +243,7 @@ def check_extensions():
("application/x-texinfo", ".texi"),
("application/x-troff", ".roff"),
("application/xml", ".xsl"),
+ ("application/yaml", ".yaml"),
("audio/flac", ".flac"),
("audio/matroska", ".mka"),
("audio/mp4", ".m4a"),
@@ -285,6 +286,26 @@ def check_extensions():
mimetypes.init()
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):
mimetypes.init()
diff --git
a/Misc/NEWS.d/next/Library/2025-04-03-20-28-54.gh-issue-132054.c1nlOx.rst
b/Misc/NEWS.d/next/Library/2025-04-03-20-28-54.gh-issue-132054.c1nlOx.rst
new file mode 100644
index 00000000000000..b9602c0b2ca1c6
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-04-03-20-28-54.gh-issue-132054.c1nlOx.rst
@@ -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.
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