Report on installed Python modules

Reports which of the named Python modules are installed and at what version without importing them — cheap, and safe for modules with heavy or side-effecting imports.

Usage

py_module_info(modules)

Arguments

modules

Character vector of Python module (import) names.

Value

A data frame with one row per unique module and columns module, available, version.

Details

Reads Python distribution metadata via importlib.metadata (or the importlib_metadata backport) together with packages_distributions() to map top-level import names onto installed distributions, so the target modules are never imported. Modules installed without standard distribution metadata (namespace packages, some editable installs) can therefore report as unavailable here even when they are importable; module_version() falls back to importing in that case.

Examples

if (FALSE) { # \dontrun{
py_module_info(c("numpy", "pandas"))
} # }