def get_package_version(module_obj, value):
    """Get the version of a package or a module's package.

    :param object module_obj: The module that was imported for the consumer
    :param str value: The namespaced module path or package name
    :rtype: str or None

    """
    for key in ['version', '__version__']:
        if hasattr(module_obj, key):
            return getattr(module_obj, key)
    parts = value.split('.')
    for index, part in enumerate(parts):
        try:
            return pkg_resources.get_distribution(
                '.'.join(parts[0:index + 1])).version
        except (pkg_resources.DistributionNotFound,
                pkg_resources.RequirementParseError):
            continue