Python函数赢得'；不能完全执行

这是一个虚拟类，用于测试多进程生成器。传递消息需要一个队列和一个数字，该数字指示线程被调用的次数。 由于某些原因，我无法在while循环中获得要执行的第一次打印

print（“线程类型1编号%d运行计数%d”）%（线程编号，计数）

不会运行，但

print（“终止线程类型1编号%d”）%Thread\u编号

会运行

class test_imports:#Test classes remove 
      def import_1(self, control_queue, thread_number):
          print ("Import_1 number %d started") % thread_number# Does run
          run = True
          count = 1
          while run == True:
                alive = control_queue.get()
                print ("Thread type 1 number %d run count %d") % (thread_number, count) #wont run
                count = count + 1
                if alive == 't1kill':
                   print ("Killing thread type 1 number %d") % thread_number # does run 
                   run = False
                   break

这是完整的代码

import multiprocessing 
import time 

class test_imports:#Test classes remove 
      def import_1(self, control_queue, thread_number):
          print ("Import_1 number %d started") % thread_number
          run = True
          count = 1
          while run == True:
                alive = control_queue.get()
                print ("Thread type 1 number %d run count %d") % (thread_number, count)
                count = count + 1
                if alive == 't1kill':
                   print ("Killing thread type 1 number %d") % thread_number
                   run = False
                   break



      def import_2(self, control_queue, thread_number):
          print ("Import_2 number %d started") % thread_number
          run = True
          count = 1
          while run == True:
                alive = control_queue.get()
                print ("Thread type 2 number %d run count %d") % (thread_number, count)           
                count = count + 1
                if alive == 't2kill':
                   print ("Killing thread type 2 number %d") % thread_number
                   run = False
                   break


class worker_manager:
     def __init__(self):
        self.children = {}

     def generate(self, control_queue, threadName, runNum):
        i = test_imports()
        if threadName == 'one':
            print ("Starting import_1 number %d") % runNum
            p = multiprocessing.Process(target=i.import_1, args=(control_queue, runNum))
            self.children[threadName] = p
            p.start()        
        elif threadName == 'two': 
            print ("Starting import_2 number %d") % runNum
            p = multiprocessing.Process(target=i.import_2, args=(control_queue, runNum))
            self.children[threadName] = p
            p.start()
        elif threadName == 'three':    
            p = multiprocessing.Process(target=i.import_1, args=(control_queue, runNum))
            print ("Starting import_1 number %d") % runNum
            p2 = multiprocessing.Process(target=i.import_2, args=(control_queue, runNum))
            print ("Starting import_2 number %d") % runNum
            self.children[threadName] = p
            self.children[threadName] = p2
            p.start()
            p2.start()

        else:
            print ("Not a valid choice choose one two or three")     

     def terminate(self, threadName):
         self.children[threadName].join


if __name__ == '__main__':
    # Establish communication queues
    control = multiprocessing.Queue()
    manager = worker_manager()

    runNum = int(raw_input("Enter a number: ")) 
    threadNum = int(raw_input("Enter number of threads: "))
    threadName = raw_input("Enter number: ")
    thread_Count = 0

    print ("Starting threads") 

    for i in range(threadNum):
        manager.generate(control, threadName, i)
        thread_Count = thread_Count + 1              

    time.sleep(runNum)#let threads do their thing

    print ("Terminating threads")     

    for i in range(thread_Count):
        control.put("t1kill")
        control.put("t2kill")

    manager.terminate(threadName)     

---

发布其余的代码。一定是control_queue.get（）从未返回，是吗？您是否使用了调试器？我猜control_队列是空的，因此它会阻止等待生产者向其添加内容。而且，

run=True；而run==True

看起来有点伤脑筋。你甚至没有使用你正在玩弄的旗帜。只要使用

而True

和

break

@CodieCodeMonkey，但是如果control\u queue.get（）没有返回，第三个打印就不会出现了吗？@CharlesMarsh，对，没有抓住这一点。嗯，看起来不可能！不过，您是否使用了调试器？