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gh-149567: Remove deprecated shutil.ExecError #149568

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gh-149567: Remove deprecated shutil.ExecError #149568

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8ca20cf
Remove deprecated `shutil.ExecError`
StanFromIreland May 8, 2026
3cd29a0
Merge branch 'main' into ExecError
StanFromIreland May 8, 2026
0ff7113
Adding files is handy!
StanFromIreland May 8, 2026
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8 changes: 8 additions & 0 deletions Doc/whatsnew/3.16.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -120,12 +120,20 @@ functools
* Calling the Python implementation of :func:`functools.reduce` with *function*
or *sequence* as keyword arguments has been deprecated since Python 3.14.

shutil
------

* The :exc:`!ExecError` exception which has been deprecated since Python 3.14.
It has not been used by any function in :mod:`!shutil` since Python 3.4.
(Contributed by Stan Ulbrych in :gh:`149567`.)

sysconfig
---------

* The :func:`!sysconfig.expand_makefile_vars` function
which has been deprecated since Python 3.14.
Use the ``vars`` argument of :func:`sysconfig.get_paths` instead.
(Contributed by Stan Ulbrych in :gh:`149499`.)

.. Add removals above alphabetically, not here at the end.

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12 changes: 0 additions & 12 deletions Lib/shutil.py
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Expand Up @@ -1638,15 +1638,3 @@ def which(cmd, mode=os.F_OK | os.X_OK, path=None):
if _access_check(name, mode):
return name
return None

def __getattr__(name):
if name == "ExecError":
import warnings
warnings._deprecated(
"shutil.ExecError",
f"{warnings._DEPRECATED_MSG}; it "
"isn't raised by any shutil function.",
remove=(3, 16)
)
return RuntimeError
raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
4 changes: 2 additions & 2 deletions Lib/test/test_peepholer.py
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Expand Up @@ -1127,8 +1127,8 @@ def test_import_from_doesnt_clobber_load_fast_borrow(self):
def f(self):
if x: pass
self.x
from shutil import ExecError
print(ExecError)
from heapq import heapify_max
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@StanFromIreland StanFromIreland May 8, 2026 •
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Turns out it was used somewhere after all! Technically this doesn't matter, but to avoid any potential confusion I changed it to something else.

I confirmed it still fails when 1561385 is reverted.

print(heapify_max)
self.assertInBytecode(f, "LOAD_FAST_BORROW", "self")

class DirectCfgOptimizerTests(CfgOptimizationTestCase):
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2 changes: 0 additions & 2 deletions Lib/test/test_shutil.py
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Expand Up @@ -3580,8 +3580,6 @@ def test_module_all_attribute(self):
if hasattr(os, 'statvfs') or os.name == 'nt':
target_api.append('disk_usage')
self.assertEqual(set(shutil.__all__), set(target_api))
with self.assertWarns(DeprecationWarning):
from shutil import ExecError # noqa: F401


if __name__ == '__main__':
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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Library/2026-05-08-16-44-20.gh-issue-149567.iiZKEj.rst
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@@ -0,0 +1,2 @@
Remove the :exc:`!shutil.ExecError` exception which has been deprecated
since Python 3.14.
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