https://github.com/python/cpython/commit/4aef13832521b4e7785c9643f6a995c92b4a691d
commit: 4aef13832521b4e7785c9643f6a995c92b4a691d
branch: main
author: Rogdham <[email protected]>
committer: encukou <[email protected]>
date: 2025-12-19T13:44:03+01:00
summary:
gh-136282: Configparser: create unnamed sections via mapping protocol access
(GH-136313)
files:
A Misc/NEWS.d/next/Library/2025-07-05-08-30-07.gh-issue-136282.K3JKyD.rst
M Lib/configparser.py
M Lib/test/test_configparser.py
diff --git a/Lib/configparser.py b/Lib/configparser.py
index 18af1eadaad111..d435a5c2fe0da2 100644
--- a/Lib/configparser.py
+++ b/Lib/configparser.py
@@ -794,7 +794,8 @@ def read_dict(self, dictionary, source='<dict>'):
"""
elements_added = set()
for section, keys in dictionary.items():
- section = str(section)
+ if section is not UNNAMED_SECTION:
+ section = str(section)
try:
self.add_section(section)
except (DuplicateSectionError, ValueError):
diff --git a/Lib/test/test_configparser.py b/Lib/test/test_configparser.py
index e7364e18742c16..1bfb53ccbb1398 100644
--- a/Lib/test/test_configparser.py
+++ b/Lib/test/test_configparser.py
@@ -2215,6 +2215,16 @@ def test_add_section(self):
cfg.add_section(configparser.UNNAMED_SECTION)
cfg.set(configparser.UNNAMED_SECTION, 'a', '1')
self.assertEqual('1', cfg[configparser.UNNAMED_SECTION]['a'])
+ output = io.StringIO()
+ cfg.write(output)
+ self.assertEqual(output.getvalue(), 'a = 1\n\n')
+
+ cfg = configparser.ConfigParser(allow_unnamed_section=True)
+ cfg[configparser.UNNAMED_SECTION] = {'a': '1'}
+ self.assertEqual('1', cfg[configparser.UNNAMED_SECTION]['a'])
+ output = io.StringIO()
+ cfg.write(output)
+ self.assertEqual(output.getvalue(), 'a = 1\n\n')
def test_disabled_error(self):
with self.assertRaises(configparser.MissingSectionHeaderError):
@@ -2223,6 +2233,9 @@ def test_disabled_error(self):
with self.assertRaises(configparser.UnnamedSectionDisabledError):
configparser.ConfigParser().add_section(configparser.UNNAMED_SECTION)
+ with self.assertRaises(configparser.UnnamedSectionDisabledError):
+ configparser.ConfigParser()[configparser.UNNAMED_SECTION] = {'a':
'1'}
+
def test_multiple_configs(self):
cfg = configparser.ConfigParser(allow_unnamed_section=True)
cfg.read_string('a = 1')
diff --git
a/Misc/NEWS.d/next/Library/2025-07-05-08-30-07.gh-issue-136282.K3JKyD.rst
b/Misc/NEWS.d/next/Library/2025-07-05-08-30-07.gh-issue-136282.K3JKyD.rst
new file mode 100644
index 00000000000000..b5589b47716c70
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-07-05-08-30-07.gh-issue-136282.K3JKyD.rst
@@ -0,0 +1,2 @@
+Add support for :const:`~configparser.UNNAMED_SECTION` when creating a
+section via the mapping protocol access
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