Their are some "cell magics" for running different languages in individual blocks in a Jupyter notebook. I gave it a try in passing with javascript a while back and I remember there was a way to share variables through as well.
Unfortunately it looks like there is none for R or Julia, but perhaps they are installed by those specific packages, or their is some other way I don't know of.
You can see the available magics here: https://ipython.org/ipython-doc/3/interactive/magics.html#ce...
Unfortunately it looks like there is none for R or Julia, but perhaps they are installed by those specific packages, or their is some other way I don't know of.