Changing your default python version

scrobbler can use either a python 2 or python 3 script to scrape your scrobbles, but I recommend using the python 3 version. The easiest way to check if R will use a python 3 installation is to use scrobbler::py_version(). On my machine it returns

Python 3.6.0 :: Anaconda 4.3.0 (x86_64)

If your version has 3 as its major number (i.e., 3.x.y) then you’re fine.

However if your version has a 2 as its major number then you’ll need to download a version of python 3 which can be done here.

Once that is downloaded, you need to tell R to use that version by default. This requires editing your .Rprofile file to set python 3 as your default.

To figure out where your python 3 is installed type the following into the R console

system2("which", "python3")

if you’re on mac, or

system2("where", "python3")
#> Warning in system2("where", "python3"): error in running command

if you’re on windows. The output I get on my machine is //anaconda/bin/python3, but it may look different on yours.

Then, open your .Rprofile by doing


Unless you’ve edited this before, it will probably be blank. Into your .Rprofile, paste the following

Sys.setenv(PATH = paste(c("python3path", Sys.getenv("PATH")),
                       collapse = .Platform$path.sep))

where python3path is replaced by the output from either which python3 or where python3 from above.

As an example, when I do system2("which", "python3"), my output is


Therefore, the code I paste into .Rprofile is

Sys.setenv(PATH = paste(c("//anaconda/bin", Sys.getenv("PATH")),
                       collapse = .Platform$path.sep))

Note that I have removed the /python3 bit from the end.

Save and close your .Rprofile and restart R. Now when you run


It should return a python3 installation.