diagnose.py 文件源码

def check_python_import(package_or_module):
    """
    Checks if a python package or module is importable.

    Arguments:
        package_or_module -- the package or module name to check

    Returns:
        True or False
    """
    logger = logging.getLogger(__name__)
    logger.debug("Checking python import '%s'...", package_or_module)
    loader = pkgutil.get_loader(package_or_module)
    found = loader is not None
    if found:
        logger.debug("Python %s '%s' found: %r",
                     "package" if loader.is_package(package_or_module)
                     else "module", package_or_module, loader.get_filename())
    else:
        logger.debug("Python import '%s' not found", package_or_module)
    return found