树莓派的python脚本模块布局

#!/usr/bin/python2.7

"this is my raspberrypi python layout"

import heapq

debug = True

class PriorityQueue:

    def __init__(self):
        self._queue = []
        self._index = 0

    def push(self,item,priority):
        heapq.heappush(self._queue,(-priority,self._index,item))
        self._index += 1

    def pop(self):
        return heapq.heappop(self._queue)[-1]

class Item:
    def __init__(self,name):
        self.name = name
    def __repr__(self):
        return 'Item({!r})'.format(self.name)

def test():
    q = PriorityQueue()
    q.push(Item('foo'),1)
    q.push(Item('foq'),5)
    a = q.pop()
    b = q.pop()
    print(a)
    print(b)

if __name__ == '__main__':
    test()