使用rpy2将2d numpy数组保存为R文件格式

This is a beginner's question but how do you save a 2d numpy array to a file in (compressed) R format using rpy2? To be clear, I want to save it in rpy2 and then later read it in using R. I would like to avoid csv as the amount of data will be large.This is a beginner's question but how do you sa