From b905fad83819ec9102ecfb97e3d8ab0aaddd9784 Mon Sep 17 00:00:00 2001
From: Nachtalb <9467802+Nachtalb@users.noreply.github.com>
Date: Wed, 31 Jan 2024 16:33:46 +0100
Subject: [PATCH] gh-111741: Recognise image/webp as a standard format in the
 mimetypes module (GH-111742)

Previously it was supported as a non-standard type.
---
 Lib/mimetypes.py                                               | 2 +-
 Lib/test/test_mimetypes.py                                     | 3 +--
 .../Library/2023-11-04-22-32-27.gh-issue-111741.f1ufr8.rst     | 1 +
 3 files changed, 3 insertions(+), 3 deletions(-)
 create mode 100644 Misc/NEWS.d/next/Library/2023-11-04-22-32-27.gh-issue-111741.f1ufr8.rst

diff --git a/Lib/mimetypes.py b/Lib/mimetypes.py
index 37228de4828..51b99701c9d 100644
--- a/Lib/mimetypes.py
+++ b/Lib/mimetypes.py
@@ -528,6 +528,7 @@ def _default_mime_types():
         '.tiff'   : 'image/tiff',
         '.tif'    : 'image/tiff',
         '.ico'    : 'image/vnd.microsoft.icon',
+        '.webp'   : 'image/webp',
         '.ras'    : 'image/x-cmu-raster',
         '.pnm'    : 'image/x-portable-anymap',
         '.pbm'    : 'image/x-portable-bitmap',
@@ -587,7 +588,6 @@ def _default_mime_types():
         '.pict': 'image/pict',
         '.pct' : 'image/pict',
         '.pic' : 'image/pict',
-        '.webp': 'image/webp',
         '.xul' : 'text/xul',
         }
 
diff --git a/Lib/test/test_mimetypes.py b/Lib/test/test_mimetypes.py
index d64aee71fc4..01bba0ac2ee 100644
--- a/Lib/test/test_mimetypes.py
+++ b/Lib/test/test_mimetypes.py
@@ -96,14 +96,12 @@ class MimeTypesTestCase(unittest.TestCase):
         # First try strict
         eq(self.db.guess_type('foo.xul', strict=True), (None, None))
         eq(self.db.guess_extension('image/jpg', strict=True), None)
-        eq(self.db.guess_extension('image/webp', strict=True), None)
         # And then non-strict
         eq(self.db.guess_type('foo.xul', strict=False), ('text/xul', None))
         eq(self.db.guess_type('foo.XUL', strict=False), ('text/xul', None))
         eq(self.db.guess_type('foo.invalid', strict=False), (None, None))
         eq(self.db.guess_extension('image/jpg', strict=False), '.jpg')
         eq(self.db.guess_extension('image/JPG', strict=False), '.jpg')
-        eq(self.db.guess_extension('image/webp', strict=False), '.webp')
 
     def test_filename_with_url_delimiters(self):
         # bpo-38449: URL delimiters cases should be handled also.
@@ -183,6 +181,7 @@ class MimeTypesTestCase(unittest.TestCase):
             self.assertEqual(mimetypes.guess_extension('application/xml'), '.xsl')
             self.assertEqual(mimetypes.guess_extension('audio/mpeg'), '.mp3')
             self.assertEqual(mimetypes.guess_extension('image/avif'), '.avif')
+            self.assertEqual(mimetypes.guess_extension('image/webp'), '.webp')
             self.assertEqual(mimetypes.guess_extension('image/jpeg'), '.jpg')
             self.assertEqual(mimetypes.guess_extension('image/tiff'), '.tiff')
             self.assertEqual(mimetypes.guess_extension('message/rfc822'), '.eml')
diff --git a/Misc/NEWS.d/next/Library/2023-11-04-22-32-27.gh-issue-111741.f1ufr8.rst b/Misc/NEWS.d/next/Library/2023-11-04-22-32-27.gh-issue-111741.f1ufr8.rst
new file mode 100644
index 00000000000..e43f93a270c
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-11-04-22-32-27.gh-issue-111741.f1ufr8.rst
@@ -0,0 +1 @@
+Recognise ``image/webp`` as a standard format in the :mod:`mimetypes` module.