I try Rust, Ruby and others on the side. But Python is just so heavily fortified now that I constantly suggest startups who are going to build non-trivial tech to select Python. Also the whole Linux, deployment, etc. space is filled with Python.
Biology, Physics, Math folks also use more Python than any other language.
https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy...
It's also faster than Node. Significantly faster. I was troubleshooting a connection issue to a db from a .NET Core API so I set up a NodeJS API hitting the same db to isolate it to the connection. After I was done fixing things, I compared the API response speeds for the same thing. .NET Core outperformed Node dramatically just like in benchmarks.
or Scala if you need bigger scale?
After that there's a fairly healthy dose of C and Fortran from the performance-oriented crowd, quite a few people use Python (but its hard to express just how completely and totally alien their uses are from one another), and the closer you shift to biology or stats the more likely you are to see somebody using R. A few enthusiasts are extremely excited about Julia.