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# SPDX-FileCopyrightText: Copyright 2022, Arm Limited and/or its affiliates.
# SPDX-License-Identifier: Apache-2.0
"""Util functions for managing python packages."""
from __future__ import annotations
import logging
import subprocess # nosec
import sys
from importlib.metadata import distribution
from importlib.metadata import PackageNotFoundError
from mlia.core.errors import InternalError
logger = logging.getLogger(__name__)
class PyPackageManager:
"""Python package manager."""
@staticmethod
def package_installed(pkg_name: str) -> bool:
"""Return true if package installed."""
try:
distribution(pkg_name)
except PackageNotFoundError:
return False
return True
def packages_installed(self, pkg_names: list[str]) -> bool:
"""Return true if all provided packages installed."""
return all(self.package_installed(pkg) for pkg in pkg_names)
def install(self, pkg_names: list[str]) -> None:
"""Install provided packages."""
if not pkg_names:
raise ValueError("No package names provided")
self._execute_pip_cmd("install", pkg_names)
def uninstall(self, pkg_names: list[str]) -> None:
"""Uninstall provided packages."""
if not pkg_names:
raise ValueError("No package names provided")
self._execute_pip_cmd("uninstall", ["--yes", *pkg_names])
@staticmethod
def _execute_pip_cmd(subcommand: str, params: list[str]) -> None:
"""Execute pip command."""
assert sys.executable, "Unable to launch pip command"
try:
output = subprocess.check_output( # nosec
[
sys.executable,
"-m",
"pip",
"--disable-pip-version-check",
subcommand,
*params,
],
stderr=subprocess.STDOUT,
text=True,
)
returncode = 0
except subprocess.CalledProcessError as err:
output = err.output
returncode = err.returncode
for line in output.splitlines():
logger.debug(line.rstrip())
if returncode != 0:
raise InternalError("Unable to install python package")
def get_package_manager() -> PyPackageManager:
"""Get python packages manager."""
return PyPackageManager()
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