May 23, 2025 · May 23, 2025 · May 23, 2025
diff --git a/Lib/asyncio/base_subprocess.py b/Lib/asyncio/base_subprocess.py
        for proto in self._pipes.values():
            if proto is None:
                continue
            proto.pipe.close()
            # See gh-114177
            # skip closing the pipe if loop is already closed
            # this can happen e.g. when loop is closed immediately after
            # process is killed
            if self._loop and not self._loop.is_closed():
                proto.pipe.close()

        if (self._proc is not None and
                # has the child process finished?
diff --git a/Misc/NEWS.d/next/Library/2025-05-22-13-10-32.gh-issue-114177.3TYUJ3.rst b/Misc/NEWS.d/next/Library/2025-05-22-13-10-32.gh-issue-114177.3TYUJ3.rst
 Fix :mod:`asyncio` to not close subprocess pipes which would otherwise error out when the event loop is already closed.
Original file line number	Diff line number	Diff line change
Expand Up		@@ -104,7 +104,12 @@ def close(self):
		for proto in self._pipes.values():
		if proto is None:
		continue
		proto.pipe.close()
		# See gh-114177
		# skip closing the pipe if loop is already closed
		# this can happen e.g. when loop is closed immediately after
		# process is killed
		if self._loop and not self._loop.is_closed():
		proto.pipe.close()

		if (self._proc is not None and
		# has the child process finished?
Expand Down
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Fix :mod:`asyncio` to not close subprocess pipes which would otherwise error out when the event loop is already closed.