Python优先队列实现方法示例

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

更多关于Python相关内容可查看本站专题:《Python数据结构与算法教程》、《Python函数使用技巧总结》、《Python字符串操作技巧汇总》、《Python入门与进阶经典教程》及《Python文件与目录操作技巧汇总》

希望本文所述对大家Python程序设计有所帮助。

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