from threading import Thread
class CountdownThread(Thread):
def __init__(self, n):
super(CountdownThread, self).__init__() #在繼承Thread時，為什么要執(zhí)行Thread的構(gòu)造函數(shù)呢？
self.n = 0
def run(self):
while self.n > 0:
print('T-minus', self.n)
self.n -= 1
time.sleep(5)
c = CountdownThread(5)
c.start()1.在繼承Thread時，為什么要執(zhí)行Tread的構(gòu)造函數(shù)呢？
ps：本人背景自學(xué)+google，還請不吝賜教
2
0
0
學(xué)習(xí)是最好的投資！
The constructor of the parent class has thread initialization work.
For example: when a disciple inherits a teacher’s profession, he can’t just innovate right from the start, right? You still have to learn the basic skills from the master
If the constructor is overridden in a subclass, the constructor of the subclass will be called. If not, the constructor of its parent class will be called. If the constructor of the parent class is not called in the constructor of the subclass. Then the constructor of the parent class will not be called in the child class
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
