script_helper.py 文件源码

def run_python_until_end(*args, **env_vars):
    env_required = _interpreter_requires_environment()
    if '__isolated' in env_vars:
        isolated = env_vars.pop('__isolated')
    else:
        isolated = not env_vars and not env_required
    cmd_line = [sys.executable, '-X', 'faulthandler']
    if isolated:
        # isolated mode: ignore Python environment variables, ignore user
        # site-packages, and don't add the current directory to sys.path
        cmd_line.append('-I')
    elif not env_vars and not env_required:
        # ignore Python environment variables
        cmd_line.append('-E')
    # Need to preserve the original environment, for in-place testing of
    # shared library builds.
    env = os.environ.copy()
    # But a special flag that can be set to override -- in this case, the
    # caller is responsible to pass the full environment.
    if env_vars.pop('__cleanenv', None):
        env = {}
    env.update(env_vars)
    cmd_line.extend(args)
    p = subprocess.Popen(cmd_line, stdin=subprocess.PIPE,
                         stdout=subprocess.PIPE, stderr=subprocess.PIPE,
                         env=env)
    try:
        out, err = p.communicate()
    finally:
        subprocess._cleanup()
        p.stdout.close()
        p.stderr.close()
    rc = p.returncode
    err = strip_python_stderr(err)
    return _PythonRunResult(rc, out, err), cmd_line