在Python中动态实例化类

Question

I want to dynamically add threading.Thread classes to a thread queue based on a database query. Is that possible?

For example:

import threading, Queue

class worker(threading.Thread):
    def run(self):
        while True:
            print 'doing stuff'

# get jobs from db
jobs = list(db.Jobs.find())

q = Queue.Queue(5)
for job in jobs:
    # instantiate a worker thread here.. don't know how to do this
    ...
    # start new worker thread
    new_worker_thread.start()
    # then add the worker to the queue
    q.put(new_worker_thread)

Any advice would be awesome.

Answer 1

Simply use:

new_worker_thread = worker()

This instantiates a new worker thread. After this you can start and put it in the queue.

Some more information on threads can be found here: http://www.tutorialspoint.com/python/python_multithreading.htm

Very useful tutorial!