创建与变量类型相同的对象

让我们定义几个 Event 班级:

class Event1:
    def __init__(self, id, val1, val2):
        self.id = id
        self.val1 = val1
        self.val2 = val2

class Event2:
    def __init__(self, id):
        self.id = id

class Event3:
    def __init__(self, id, val1):
        self.id = id
        self.val1 = val1

我使用存储事件的队列( heapq ). 为了避免使用多个if/else语句,我将语句压缩为 or . 结果是:

event = heapq.heappop(heap)
if type(event) == Event1 or type(event) == Event2:
    # Do stuff

else:
    # Do stuff

我的问题是,在退出语句之前,我想重新安排一个与我的变量相同类型的新事件。 event .

i、 e.在if语句中:

if type(event) == Event1 or type(event) == Event2:
    new_event = # Same type as event, either Event1 or Event2
    # Both take the same arguments, 
    # so I do not need to bother with *arg and **kwargs.

如何创建与变量类型相同的实例?谢谢!