python - 是什么导致此 Python 代码出现 "unbound method __init__() must be called with instance as first argument"？

Question

我有这门课:

from threading import Thread 
import time

class Timer(Thread): 
    def __init__(self, interval, function, *args, **kwargs): 
        Thread.__init__() 
        self.interval = interval 
        self.function = function 
        self.args = args 
        self.kwargs = kwargs 
        self.start()

    def run(self): 
        time.sleep(self.interval) 
        return self.function(*self.args, **self.kwargs) 

我用这个脚本调用它:

    import timer 
    def hello():
        print \"hello, world
    t = timer.Timer(1.0, hello)
    t.run()

得到这个错误，我不知道为什么:unbound method __init__() must be called with instance as first argument

Answer 1

你正在做:

Thread.__init__() 

使用:

Thread.__init__(self) 

或者，更确切地说，使用 super()