use_python appears to have no effect about reticulate HOT 5 CLOSED

To any newbies out there (like me), this means do:

library("reticulate")
use_python("/usr/bin/python", required = T)

Before anything else. Check with

py_config()

from reticulate.

That doesn’t work, you should do

reticulate::use_python(Sys.which('python3'), required = TRUE)

And there’s no difference if you do it before library(reticulate) or after, as long as it’s before you try to run any other stuff.

from reticulate.

You can only load one Python interpreter per R session (it can't really be cleanly unloaded without messy side effects that cause crashes down the road) so the use_python call only applies before you actually initialize the interpreter.

from reticulate.

> packageVersion("reticulate")
[1] ‘0.7’
> 

from reticulate.

I actually do:

reticulate::use_python("python3")
library(reticulate)

from reticulate.