Nothing
## ----setup, include=FALSE-----------------------------------------------------
library(reticulate)
# this vignette requires python 3.8 or newer
eval <- tryCatch({
config <- py_config()
numeric_version(config$version) >= "3.8" && py_numpy_available()
}, error = function(e) FALSE)
knitr::opts_chunk$set(
collapse = TRUE,
comment = "#>",
eval = eval
)
## -----------------------------------------------------------------------------
library(reticulate)
## -----------------------------------------------------------------------------
if (TRUE) {
cat("This is one expression. \n")
cat("This is another expression. \n")
}
## -----------------------------------------------------------------------------
library(reticulate)
l <- r_to_py(list(1, 2, 3))
it <- as_iterator(l)
iter_next(it)
iter_next(it)
iter_next(it)
iter_next(it, completed = "StopIteration")
## -----------------------------------------------------------------------------
my_function <- function(name = "World") {
cat("Hello", name, "\n")
}
my_function()
my_function("Friend")
## ----eval = FALSE-------------------------------------------------------------
# dplyr <- loadNamespace("dplyr")
## ----error = TRUE-------------------------------------------------------------
library(reticulate)
py$a_strict_Python_function(3) # error
py$a_strict_Python_function(3L) # success
py$a_strict_Python_function(as.integer(3)) # success
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