The entire surrounding ecosystem. Which includes not just the core numpy/scipy libraries but the stats, modeling, ML, plotting, etc. Plus the wealth of other Py

The entire surrounding ecosystem. Which includes not just the core numpy/scipy libraries but the stats, modeling, ML, plotting, etc. Plus the wealth of other Python stuff it can integrate with (I work at an almost entirely Python shop -- data science people work in the same language as pipeline and application people, which is really an overlooked thing). Plus the ease of installation and management from Anaconda. Plus the notebook format for easy sharing. Plus... well, lots and lots and lots of things. "We have a fast numerical library" is step one of about ten thousand to achieving parity with what the Python/numpy/scipy ecosystem does.