Method _read

python/src/load.cpp:164–175

 private:
  void _read(char* data, size_t n) {
    nb::object memview =
        nb::steal<nb::object>(PyMemoryView_FromMemory(data, n, PyBUF_WRITE));
    if (!memview.is_valid()) {
      throw std::runtime_error("[load] Failed to create memoryview for read");
    }
    nb::object bytes_read = readinto_func_(memview);

    if (bytes_read.is_none() || nb::cast<size_t>(bytes_read) < n) {
      throw std::runtime_error("[load] Failed to read from python stream");
    }
  }

  nb::object pyistream_;
  nb::object readinto_func_;