You think correctly! While we’re not there yet, most of the people using the language are also developing the language, as well as the packages for the language. The other comment mentioned PyCall, so yes you can use Python from Julia, but that kindof defeats the purpose of using Julia in my opinion. If you’re interested in Julia I would reccomend
Gadify.jl (Data visualization)
Flux.jl (nueral networks)
Lathe.jl (stats, preprocessing, validation, and models)
MLDataUtils.jl (ML tools)
DataFrames.jl (DataFrames)
TableView.jl (substantially better views for DataFrames.jl)
HTTP.jl (requests)
CSV.jl (read comma seperated values)