在函数中指定方法类型

class Element(object):    """    封装element元素    """    def __new__(cls, *args):        """        :rtype: WebElement        """        args_copy = MyList(args)        args_copy[0] = by[args_copy[0]]        return args_copy

 

指定某一个变量类型， else分支上sele.driver为指定的类型

class APP(object):    """    APP页面基类    """    __metaclass__ = APPMetaclass    driver_share = {}    driver = None    command_executor = None    desired_capabilities = None    def __init__(self):        if not self.driver_share.get('driver'):            self.driver = Remote(self.command_executor, desired_capabilities=self.desired_capabilities)            self.driver_share['driver'] = self.driver        else:            self.driver = self.driver_share['driver']  # type: Remote        print id(self.driver)

 

这样子，在使用过程中就可以自动补全了