Question

让我们说我有以下代码（start.py）启动一个帖子并且永不退出（注意：不要介意拼写错误或缺少某些代码行，只需明白这个想法。）：

from threading import Thread
from anApp import AnApp

class ClassA(Thread):
    def __init__(self, _parent):
        Thread.__init__(self)
        self.parent = _parent

    def run(self):
        while 1:
            self.parent.anApp.execute()

            # Here, I want to known if the thread started in appX.py is alive.
            # if the thread stated by appX.py is alive:
            #     print 'App x is running'
            # else:
            #     print 'App x is not running'

class App():
    def __init__(self):
        self.th = None
        self.anApp = AnApp()

    def someFunction(self):
        self.th = ClassA(self)
        self.th.start()

现在，anApp.py看起来像这样：

from appX import App

Class AnApp():
    # def __init__(self) goes here...

    def execute(self):
        self.appX = App()
        self.appX.startRunning()

最后，appX.py看起来像这样（类似于start.py）：

from threading import Thread

class ClassX(Thread):
    def __init__(self, _parent):
        Thread.__init__(self)
        self.parent = _parent

    def run(self):
        while 1:
            print 'Im here!!!'

class App():
    # def __init__(self) goes here....

    def startRunning(self):
        self.listen = ClassX(self)
        self.listen.start()

我想知道startRunning中appX.py启动的帖子是否还活着，start.py（请查看我上面写的评论）。

Answer 1

看起来你想要这个，虽然你的示例代码在某些方面似乎不一致，所以我不能100％肯定这将适用于你的真实代码：

def run(self):
    while 1:
        self.parent.anApp.execute()  # Do you really want this inside the infinite loop?

        if self.parent.anApp.appX.listen.is_alive():
             print 'App x is running'
        else:
             print 'App x is not running'

这假设appX.py看起来像这样：

from threading import Thread

class ClassX(Thread):
    def __init__(self, _parent):
        Thread.__init__(self)
        self.parent = _parent

    def run(self):
        while 1:
            print 'Im here!!!'

class App():
    # def __init__(self) goes here....
    def startRunning(self):
        self.listen = ClassX(self)
        self.listen.start()

获取另一个类中声明的线程状态

1 个答案: