python中PriorityQueue的使用及说明

# 示例1
tsq = queue.PriorityQueue()    
tsq.put_nowait((0, '123', ['abc', 'efg'], 0))
tsq.put_nowait((0, '456', ['abc'], 0))

# 示例2
tsq = queue.PriorityQueue()
tsq.put_nowait((0, '123', {"name":'abc', "age":'efg'}, 0))
tsq.put_nowait((0, '123', {"name":'abc'}, 0))

# 示例3
tsq = queue.PriorityQueue()
tsq.put_nowait((0,{'task_name': 'aaa'}))  # tuple包含两个元素，第一个是优先级，第二个是数据
tsq.put_nowait((1, {'task_name', 'bbbb'})) 

# 示例4
import queue


class Task(object):
    def __init__(self, priority, name):
        self.priority = priority
        self.name = name

    def __str__(self):
        return "Task(priority={p}, name={n})".format(p=self.priority, n=self.name)

    def __lt__(self, other):
    	""" 定义<比较操作符。 """
        return self.priority < other.priority


tsq = queue.PriorityQueue()
tsq.put_nowait(Task(3, "task1"))  # 自定义的类定义了__lt__, 可以比较大小
tsq.put_nowait(Task(1, "task2"))
print(tsq.get())  # return: Task(priory=1, name=task2)