Skip to contents

Require a Python module

Source: R/require.R
require_module.Rd

This function can be used to require that Python modules are available for laminr with additional checks and nicer error messages.

Usage

require_module(
  module,
  options = NULL,
  version = NULL,
  source = NULL,
  python_version = NULL
)

Arguments

module

The name of the Python module to require

options

A vector of defined optional dependencies for the module that is being required

version

A string specifying the version of the module to require

source

A source for the module requirement, for example git+https://github.com/owner/module.git

python_version

A string defining the Python version to require. Passed to reticulate::py_require()

Value

The result of reticulate::py_require

Details

Python dependencies are set using reticulate::py_require(). If a connection to Python is already initialized and the requested module is already in the list of requirements then a further call to reticulate::py_require() will not be made to avoid errors/warnings. This means that required versions etc. need to be set before Python is initalized.

Arguments

  • Setting options = c("opt1", "opt2") results in "module[opt1,opt2]"

  • Setting version = ">=1.0.0" results in "module>=1.0.0"

  • Setting source = "my_source" results in "module @ my_source"

  • Setting all of the above results in "module[opt1,opt2]>=1.0.0 @ my_source"

See also

reticulate::py_require()

Examples

if (FALSE) { # \dontrun{
# Require lamindb
require_module("lamindb")

# Require a specific version of lamindb
require_module("lamindb", version = ">=1.2")

# Require require lamindb with options
require_module("lamindb", options = c("bionty", "wetlab"))

# Require the development version of lamindb from GitHub
require_module("lamindb", source = "git+https://github.com/laminlabs/lamindb.git")

# Require lamindb with a specific Python version
require_module("lamindb", python_version = "3.12")
} # }