From: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Date: Fri, 29 May 2026 21:30:50 +0000 (+0200)
Subject: [3.15] gh-149056: Properly pass array_hook in json.load() to json.loads() (GH-149057... 
X-Git-Tag: v3.15.0b2~43
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=863c7e0f9f9d72b8a2b87759b1ab51a0c4293de9;p=thirdparty%2FPython%2Fcpython.git

[3.15] gh-149056: Properly pass array_hook in json.load() to json.loads() (GH-149057) (GH-150591)

(cherry picked from commit f87d9605d3f9489d33aaf97a97fa9cb81cd7cc40)

Co-authored-by: Thomas Kowalski <thom.kowa@gmail.com>
---

diff --git a/Lib/json/__init__.py b/Lib/json/__init__.py
index 9681a8fe53ec..37a86831ff94 100644
--- a/Lib/json/__init__.py
+++ b/Lib/json/__init__.py
@@ -307,7 +307,7 @@ def load(fp, *, cls=None, object_hook=None, parse_float=None,
         cls=cls, object_hook=object_hook,
         parse_float=parse_float, parse_int=parse_int,
         parse_constant=parse_constant, object_pairs_hook=object_pairs_hook,
-        array_hook=None, **kw)
+        array_hook=array_hook, **kw)
 
 
 def loads(s, *, cls=None, object_hook=None, parse_float=None,
diff --git a/Lib/test/test_json/test_decode.py b/Lib/test/test_json/test_decode.py
index d846c8af7ec4..1d51fb2de0e6 100644
--- a/Lib/test/test_json/test_decode.py
+++ b/Lib/test/test_json/test_decode.py
@@ -87,6 +87,13 @@ class TestDecode:
 
         self.assertEqual(self.loads('[]', array_hook=tuple), ())
 
+    def test_load_array_hook(self):
+        # json.load must forward array_hook to loads
+        fp = StringIO('[10, 20, 30]')
+        result = self.json.load(fp, array_hook=tuple)
+        self.assertEqual(result, (10, 20, 30))
+        self.assertEqual(type(result), tuple)
+
     def test_decoder_optimizations(self):
         # Several optimizations were made that skip over calls to
         # the whitespace regex, so this test is designed to try and
diff --git a/Misc/NEWS.d/next/Library/2026-04-29-08-10-17.gh-issue-149056.jnaD4W.rst b/Misc/NEWS.d/next/Library/2026-04-29-08-10-17.gh-issue-149056.jnaD4W.rst
new file mode 100644
index 000000000000..0026d02c8762
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-04-29-08-10-17.gh-issue-149056.jnaD4W.rst
@@ -0,0 +1,2 @@
+Fix :func:`json.load` not forwarding the *array_hook* argument to
+:func:`json.loads`. Patch by Thomas Kowalski.