test_subprocess.py 文件源码

def test_preexec_errpipe_does_not_double_close_pipes(self):
        """Issue16140: Don't double close pipes on preexec error."""

        def raise_it():
            raise subprocess.SubprocessError(
                    "force the _execute_child() errpipe_data path.")

        with self.assertRaises(subprocess.SubprocessError):
            self._TestExecuteChildPopen(
                        self, [sys.executable, "-c", "pass"],
                        stdin=subprocess.PIPE, stdout=subprocess.PIPE,
                        stderr=subprocess.PIPE, preexec_fn=raise_it)