Method request

include/pybind11/pytypes.h:2379–2390

    PYBIND11_OBJECT_DEFAULT(buffer, object, PyObject_CheckBuffer)

    buffer_info request(bool writable = false) const {
        int flags = PyBUF_STRIDES | PyBUF_FORMAT;
        if (writable) {
            flags |= PyBUF_WRITABLE;
        }
        auto *view = new Py_buffer();
        if (PyObject_GetBuffer(m_ptr, view, flags) != 0) {
            delete view;
            throw error_already_set();
        }
        return buffer_info(view);
    }
};

class memoryview : public object {