Ask HN: What's the best way to go from R to Python for data science?

I know some basic python, but I've learned and become more familiar with R recently. Now to work on data sets larger than what R can handle, I want to move to Python.

Is there a cheat sheet or something somewhere that maps functions and packages in R to libraries in Python? I'm aware of Anaconda and the multiple Python libraries, but not exactly how the functions relate to their counterparts in R.