Python 线程垃圾回收

Question

如果线程对象被重新分配，正在运行的线程是否有资格进行垃圾回收？例如:

class A(threading.Thread)
    def run():
        while True:
            #Do stuff


a = A()
a.start()
time.sleep(60)
a = A()

此时，即使线程 A 仍在执行操作，解释器是否可以销毁原始的 A() 线程？如果是，是否有办法防止这种情况发生？

Answer 1

我的猜测是否定的。在 Python 用来跟踪事物的任何结构中仍然有对线程的引用。我会测试它，但如果它不起作用，我会感到很惊讶。

编辑检查一下:

#!/usr/bin/env python
import threading, time

class A(threading.Thread):
    def __init__(self, name):
            threading.Thread.__init__(self)
            self.name=name
            self.count=0
    def run(self):
            while self.count<10:
                    print self.name, "Running!"
                    time.sleep(1)
                    self.count+=1

a=A("first")
a.start()
time.sleep(5)
a=A("second")
a.start()

first Running!first Running!first Running!first Running!first Running!second Running!first Running!second Running!first Running!first Running!second Running!first Running!second Running!first Running!second Running!second Running!second Running!second Running!second Running!second Running!