如何在Pycharm 2018.2的类方法声明中添加带有类型提示的文档?

假设我有一个如下的类方法-

class BasePreStep:
    def __init__(self, threadpool, release_manifest, service_manifest, upgrade_bundle, system_config):

class BasePreStep:
    __metaclass__ = ABCMeta

    def __init__(self, threadpool, release_manifest, service_manifest, upgrade_bundle, system_config):
        # type: (self, ThreadPool, service_version_pb2.ReleaseManifest, service_version_pb2.ServiceManifest, str, SystemConfig) -> ()

但如果我添加如下评论(如所解释的 here

类BasePreStep:

def __init__(self, threadpool, release_manifest, service_manifest, upgrade_bundle, system_config):
    """

    :param threadpool: Threadpool
    :param release_manifest: service_version_pb2.ReleaseManifest
    :param service_manifest: service_version_pb2.ServiceManifest
    :param upgrade_bundle: str
    :param system_config: SystemConfig
    """

有人能让我知道什么是建议的方式添加评论和类型提示在Pycharm?

• Python 2.7版