Lib/test/support/strace_helper.py11:_strace_binary="/usr/bin/strace"27:strace_returncode:int30:"""The event messages generated by strace. This is very similar to the31:    stderr strace produces with returncode marker section removed."""40:stringswhichwouldmixintothestraceoutput."""97:def strace_python(code, strace_flags, check=True):98:    """Runstraceandreturnthetrace.100:Setsstrace_returncodeandpython_returncodeto`-1`onerror."""105:            strace_returncode=-1,111:    # Run strace, and get out the raw text116:            __run_using_command=[_strace_binary] + strace_flags,128:        return _make_error("Expected strace events and exit code line",140:    return StraceResult(strace_returncode=res.rc,147:def get_events(code, strace_flags, prelude, cleanup):162:    trace = strace_python(to_run, strace_flags)167:def get_syscalls(code, strace_flags, prelude="", cleanup="",170:    events = get_events(code, strace_flags, prelude=prelude, cleanup=cleanup)180:def _can_strace():181:    res = strace_python("import sys; sys.exit(0)",182:                        # --trace option needs strace 5.5 (gh-133741)185:    if res.strace_returncode == 0 and res.python_returncode == 0:191:def requires_strace():193:        return unittest.skip("Linux only, requires strace.")203:        return unittest.skip("LeakSanitizer does not work under ptrace (strace, gdb, etc)")205:    return unittest.skipUnless(_can_strace(), "Requires working strace")208:__all__ = ["filter_memory", "get_events", "get_syscalls", "requires_strace",209:           "strace_python", "StraceEvent", "StraceResult"]

yihong@ubuntu:~/cpython$ ./python -m unittest test.test_pyrepl.test_unix_console.TestUnixConsoleEIOHandlingFF======================================================================FAIL: test_eio_error_handling_in_prepare (test.test_pyrepl.test_unix_console.TestUnixConsoleEIOHandling.test_eio_error_handling_in_prepare)----------------------------------------------------------------------Traceback (most recent call last):  File "/home/yihong/cpython/Lib/test/test_pyrepl/test_unix_console.py", line 330, in test_eio_error_handling_in_prepare    console.prepare()    ~~~~~~~~~~~~~~~^^  File "/home/yihong/cpython/Lib/_pyrepl/unix_console.py", line 339, in prepare    tcsetattr(self.input_fd, termios.TCSADRAIN, raw)    ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  File "/home/yihong/cpython/Lib/unittest/mock.py", line 1175, in __call__    return self._mock_call(*args, **kwargs)           ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^  File "/home/yihong/cpython/Lib/unittest/mock.py", line 1179, in _mock_call    return self._execute_mock_call(*args, **kwargs)           ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^  File "/home/yihong/cpython/Lib/unittest/mock.py", line 1234, in _execute_mock_call    raise effecttermios.error: (5, 'Input/output error')During handling of the above exception, another exception occurred:Traceback (most recent call last):  File "/home/yihong/cpython/Lib/unittest/mock.py", line 1432, in patched    return func(*newargs, **newkeywargs)  File "/home/yihong/cpython/Lib/test/test_pyrepl/test_unix_console.py", line 333, in test_eio_error_handling_in_prepare    self.fail("EIO error should have been handled gracefully in prepare()")    ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^AssertionError: EIO error should have been handled gracefully in prepare()======================================================================FAIL: test_eio_error_handling_in_restore (test.test_pyrepl.test_unix_console.TestUnixConsoleEIOHandling.test_eio_error_handling_in_restore)Test that EIO errors during restore() are handled gracefully.----------------------------------------------------------------------Traceback (most recent call last):  File "/home/yihong/cpython/Lib/test/test_pyrepl/test_unix_console.py", line 360, in test_eio_error_handling_in_restore    console.restore()    ~~~~~~~~~~~~~~~^^  File "/home/yihong/cpython/Lib/_pyrepl/unix_console.py", line 371, in restore    tcsetattr(self.input_fd, termios.TCSADRAIN, self.__svtermstate)    ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  File "/home/yihong/cpython/Lib/unittest/mock.py", line 1175, in __call__    return self._mock_call(*args, **kwargs)           ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^  File "/home/yihong/cpython/Lib/unittest/mock.py", line 1179, in _mock_call    return self._execute_mock_call(*args, **kwargs)           ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^  File "/home/yihong/cpython/Lib/unittest/mock.py", line 1234, in _execute_mock_call    raise effecttermios.error: (5, 'Input/output error')During handling of the above exception, another exception occurred:Traceback (most recent call last):  File "/home/yihong/cpython/Lib/unittest/mock.py", line 1432, in patched    return func(*newargs, **newkeywargs)  File "/home/yihong/cpython/Lib/test/test_pyrepl/test_unix_console.py", line 363, in test_eio_error_handling_in_restore    self.fail("EIO error should have been handled gracefully in restore()")    ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^AssertionError: EIO error should have been handled gracefully in restore()----------------------------------------------------------------------Ran 2 tests in 0.002sFAILED (failures=2)

cherry_picker b9dbf6acb34fd407d52899a6c154a1c57c9a424b 3.13