Do I need to learn Javascript?

How often do you need to leave Python/R/SQL and write code in another language like Javascript?

I've (data science intern) been working on building an interactive graph database visualization that my org wants to host for users to explore on our website (it's open gov. data & we're a non-profit). So far, I've been doing everything in Python/Jupyter, using pandas, networkx, and a Sigma.js wrapper for python (ipysigma). But I've now learned that much (maybe all) of what I've written …

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