Python优先队列 Python优先队列实现方法示例
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本文实例讲述了Python优先队列实现方法。分享给大家供大家参考，具体如下：
1. 代码
import Queue
import threading
class Job(object):
def __init__(self, priority, description):
self.priority = priority
self.description = description
print 'New job:', description
return
def __cmp__(self, other):
return cmp(self.priority, other.priority)
q = Queue.PriorityQueue()
q.put(Job(3,'Mid-level job'))
q.put(Job(10,'Low-level job'))
q.put(Job(1,'Important job'))
def process_job(q):
while True:
next_job = q.get()
print 'Processing job:', next_job.description
q.task_done()
workers = [threading.Thread(target=process_job,args=(q,)),
threading.Thread(target=process_job,args=(q,)),]
for w in workers:
w.setDaemon(True)
w.start()
q.join()
2. 执行结果
New job: Mid-level job New job: Low-level job New job: Important job Processing job: Important job Processing job: Mid-level job Processing job: Low-level job
希望本文所述对大家Python程序设计有所帮助。
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