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这是一个用于测试多进程生成器的虚拟类。传递消息需要一个队列，以及一个指示线程被调用次数的数字。出于某种原因，我无法在 while 循环中获得第一个打印来执行print ("Thread type 1 number %d run count %d") % (thread_number, count)不会运行但print ("Killing thread type 1 number %d") % thread_number确实运行。

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

这是完成的代码

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)
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