Method _execute_python

Lib/test/libregrtest/main.py:674–710

(self, cmd, environ)

                python_opts.append('-E')

    def _execute_python(self, cmd, environ):
        # Make sure that messages before execv() are logged
        sys.stdout.flush()
        sys.stderr.flush()

        cmd_text = shlex.join(cmd)
        try:
            # Android and iOS run tests in embedded mode. To update their
            # Python options, see the comment in _add_ci_python_opts.
            if not cmd[0]:
                raise ValueError("No Python executable is present")

            print(f"+ {cmd_text}", flush=True)
            if hasattr(os, 'execv') and not MS_WINDOWS:
                os.execv(cmd[0], cmd)
                # On success, execv() do no return.
                # On error, it raises an OSError.
            else:
                import subprocess
                with subprocess.Popen(cmd, env=environ) as proc:
                    try:
                        proc.wait()
                    except KeyboardInterrupt:
                        # There is no need to call proc.terminate(): on CTRL+C,
                        # SIGTERM is also sent to the child process.
                        try:
                            proc.wait(timeout=EXIT_TIMEOUT)
                        except subprocess.TimeoutExpired:
                            proc.kill()
                            proc.wait()
                            sys.exit(EXITCODE_INTERRUPTED)

                sys.exit(proc.returncode)
        except Exception as exc:
            print_warning(f"Failed to change Python options: {exc!r}\n"
                          f"Command: {cmd_text}")
            # continue executing main()

    def _add_python_opts(self) -> None:
        python_opts: list[str] = []