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How to use build_and_install_packages method in autotest

Best Python code snippet using autotest_python

build_externals.py

Source:build_externals.py

...56        os.environ[env_python_path_varname] = ':'.join([57            install_dir, env_python_path])58    fetched_packages, fetch_errors = fetch_necessary_packages(package_dir,59                                                              install_dir)60    install_errors = build_and_install_packages(fetched_packages, install_dir)61    # Byte compile the code after it has been installed in its final62    # location as .pyc files contain the path passed to compile_dir().63    # When printing exception tracebacks, python uses that path first to look64    # for the source code before checking the directory of the .pyc file.65    # Don't leave references to our temporary build dir in the files.66    logging.info('compiling .py files in %s to .pyc', install_dir)67    compileall.compile_dir(install_dir, quiet=True)68    # Some things install with whacky permissions, fix that.69    external_packages.system("chmod -R a+rX '%s'" % install_dir)70    errors = fetch_errors + install_errors71    for error_msg in errors:72        logging.error(error_msg)73    return len(errors)74def fetch_necessary_packages(dest_dir, install_dir):75    """76    Fetches all ExternalPackages into dest_dir.77    :param dest_dir: Directory the packages should be fetched into.78    :param install_dir: Directory where packages will later installed.79    :return: A tuple containing two lists:80             * A list of ExternalPackage instances that were fetched and81               need to be installed.82             * A list of error messages for any failed fetches.83    """84    names_to_check = sys.argv[1:]85    errors = []86    fetched_packages = []87    for package_class in external_packages.ExternalPackage.subclasses:88        package = package_class()89        if names_to_check and package.name.lower() not in names_to_check:90            continue91        if not package.is_needed(install_dir):92            logging.info('A new %s is not needed on this system.',93                         package.name)94            if INSTALL_ALL:95                logging.info('Installing anyways...')96            else:97                continue98        if not package.fetch(dest_dir):99            msg = 'Unable to download %s' % package.name100            logging.error(msg)101            errors.append(msg)102        else:103            fetched_packages.append(package)104    return fetched_packages, errors105def build_and_install_packages(packages, install_dir):106    """107    Builds and installs all packages into install_dir.108    :param packages - A list of already fetched ExternalPackage instances.109    :param install_dir - Directory the packages should be installed into.110    :return: A list of error messages for any installs that failed.111    """112    errors = []113    for package in packages:114        if not package.build_and_install(install_dir):115            msg = 'Unable to build and install %s' % package.name116            logging.error(msg)117            errors.append(msg)118    return errors119if __name__ == '__main__':...

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