install_python(
version = "3.10:latest",
list = FALSE,
force = FALSE,
optimized = TRUE
)The version of Python to install.
Boolean; if set, list the set of available Python versions?
Boolean; force re-installation even if the requested version of Python is already installed?
Boolean; if TRUE, installation will take significantly longer but
should result in a faster Python interpreter. Only applicable on macOS and Linux.
In general, it is recommended that Python virtual environments are created
using the copies of Python installed by install_python(). For example:
library(reticulate)
version <- "3.9.12"
install_python(version)
virtualenv_create("my-environment", version = version)
use_virtualenv("my-environment")
# There is also support for a ":latest" suffix to select the latest patch release
install_python("3.9:latest") # install latest patch available at python.org
# select the latest 3.9.* patch installed locally
virtualenv_create("my-environment", version = "3.9:latest")On macOS and Linux this will build Python from sources, which may take a few minutes. Installation will be faster if some build dependencies are preinstalled. See https://github.com/pyenv/pyenv/wiki#suggested-build-environment for example commands you can run to pre-install system dependencies (requires administrator privileges).
If optimized = TRUE, (the default) Python is build with:
PYTHON_CONFIGURE_OPTS="--enable-shared --enable-optimizations --with-lto"
PYTHON_CFLAGS="-march=native -mtune=native"If optimized = FALSE, Python is built with:
On Windows, prebuilt installers from https://www.python.org are used.