https://github.com/python/cpython/commit/9ad6ba0324a71ae5b51ded6e59b1ea3b653814a5
commit: 9ad6ba0324a71ae5b51ded6e59b1ea3b653814a5
branch: main
author: Shardul Deshpande <[email protected]>
committer: StanFromIreland <[email protected]>
date: 2026-06-13T18:31:03Z
summary:
gh-151443: Fix documented default of `unittest.mock.mock_open`'s `read_data`
parameter (#151444)
files:
M Doc/library/unittest.mock.rst
diff --git a/Doc/library/unittest.mock.rst b/Doc/library/unittest.mock.rst
index 6ba1b87ea942a9..5e28a8ada595ef 100644
--- a/Doc/library/unittest.mock.rst
+++ b/Doc/library/unittest.mock.rst
@@ -2539,7 +2539,7 @@ Alternatively you can just use ``vars(my_mock)``
(instance members) and
mock_open
~~~~~~~~~
-.. function:: mock_open(mock=None, read_data=None)
+.. function:: mock_open(mock=None, read_data='')
A helper function to create a mock to replace the use of :func:`open`. It
works
for :func:`open` called directly or used as a context manager.
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