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#' Initialize spaCy
#'
#' Initialize spaCy to call from R.
#'
#' @return NULL
#' @param model Language package for loading spaCy. Example: `en_core_web_sm` (English) and
#' `de_core_web_sm` (German). Default is `en_core_web_sm`.
#' @param entity logical; if `FALSE` is selected, named entity recognition
#' is turned off in spaCy. This will speed up the parsing as it will exclude
#' `ner` from the pipeline. For details of spaCy pipeline, see
#' <https://spacy.io/usage/processing-pipelines>. The option `FALSE`
#' is available only for spaCy version 2.0.0 or higher.
#' @param ... not used.
#'
#' @export
#' @author Akitaka Matsuo, Johannes B. Gruber
spacy_initialize <- function(model = "en_core_web_sm",
entity = TRUE,
...) {
if (length(list(...)) > 0)
warning("Note that we have deprecated a number of parameters to simplify this function")
if (!is.null(options("spacy_initialized")$spacy_initialized)) {
message("spaCy is already initialized")
return(NULL)
}
if (!nchar(Sys.getenv("RETICULATE_PYTHON")) > 0) {
if (!reticulate::virtualenv_exists(Sys.getenv("SPACY_PYTHON", unset = "r-spacyr")))
stop("No spaCy environment found. Use `spacy_install()` to get started.")
if (!"spacy" %in% reticulate::py_list_packages(Sys.getenv("SPACY_PYTHON", unset = "r-spacyr"))$package)
stop("spaCy was not found in your environment. Use `spacy_install()`",
"to get started.")
reticulate::use_virtualenv(Sys.getenv("SPACY_PYTHON", unset = "r-spacyr"))
}
spacyr_pyexec(pyfile = system.file("python", "spacyr_class.py",
package = "spacyr"))
spacyr_pyassign("model", model)
spacyr_pyassign("spacy_entity", entity)
options("spacy_entity" = entity)
spacyr_pyexec(pyfile = system.file("python", "initialize_spacyPython.py",
package = "spacyr"))
spacy_version <- spacyr_pyget("spacy_version")
if (entity == FALSE && as.integer(substr(spacy_version, 1, 1)) < 2){
message("entity == FALSE is only available for spaCy version 2.0.0 or higher")
options("spacy_entity" = TRUE)
}
message("successfully initialized (spaCy Version: ", spacy_version, ", language model: ", model, ")")
options("spacy_initialized" = TRUE)
}
#' Finalize spaCy
#'
#' While running spaCy on Python through R, a Python process is always running
#' in the background and Rsession will take up a lot of memory (typically over
#' 1.5GB). `spacy_finalize()` terminates the Python process and frees up
#' the memory it was using.
#' @return NULL
#' @export
#' @author Akitaka Matsuo
spacy_finalize <- function() {
if (is.null(getOption("spacy_initialized"))) {
stop("Nothing to finalize. spaCy is not initialized")
}
spacyr_pyexec(pyfile = system.file("python", "finalize_spacyPython.py",
package = "spacyr"))
options("spacy_initialized" = NULL)
}
#' Find spaCy
#'
#' Locate the user's version of Python for which spaCy installed.
#' @return spacy_python
#' @export
#' @param model name of the language model
#' @param ask logical; if `FALSE`, use the first spaCy installation found;
#' if `TRUE`, list available spaCy installations and prompt the user
#' for which to use. If another (e.g. `python_executable`) is set, then
#' this value will always be treated as `FALSE`.
#'
#' @keywords internal
#' @importFrom data.table data.table
find_spacy <- function(model = "en_core_web_sm", ask){
.Deprecated(msg = c(
"spacy now uses the virutal environment 'r-spacyr' by default. ",
"You can use `reticulate::virtualenv_root()` to find it or set ",
"the variable RETICULATE_PYTHON to manage your own environment."
))
}
clear_spacy_options <- function(){
options(spacy_python_executable = NULL)
options(spacy_condaenv = NULL)
options(spacy_virtualenv = NULL)
}
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