| import pathlib | |
| import re | |
| import subprocess | |
| import sys | |
| import traceback | |
| import pkg_resources | |
| def install_package(package): | |
| try: | |
| subprocess.check_call([sys.executable, "-m", "pip", "install", package]) | |
| except subprocess.CalledProcessError as e: | |
| print(f"Error installing package {package}: {e}", file=sys.stderr) | |
| return False | |
| return True | |
| def is_package_installed(package_name, comparison=None, required_version=None): | |
| try: | |
| installed_version = pkg_resources.get_distribution(package_name).version | |
| if comparison and required_version: | |
| return eval(f'"{installed_version}" {comparison}= "{required_version}"') | |
| return True | |
| except: | |
| return False | |
| def main(): | |
| req_file = pathlib.Path(__file__).resolve().parent / "requirements.txt" | |
| req_re = re.compile(r'^([^=<>~]*)\s*(?:([=<>~])=\s*([^=<>~]*))?$') | |
| with open(req_file) as file: | |
| for package in file: | |
| package = package.strip() | |
| match = req_re.match(package) | |
| if not match: | |
| print(f"Invalid package format: {package}", file=sys.stderr) | |
| continue | |
| package_name, comparison, required_version = match.groups() | |
| if not is_package_installed(package_name, comparison, required_version): | |
| install_package(package) | |
| main() | |