Python 异步迭代器

1、参考来源

https://docs.python.org/zh-cn/3.9/reference/datamodel.html?highlight=aiter#asynchronous-iterators

2、代码示例：

 1 # -*- coding: utf-8 -*-
 2 """
 3    File Name : test
 4    Description :
 5    Author : Administrator
 6 """
 7 import asyncio
 8 
 9 
10 class Reader(object):
11 
12     def __init__(self):
13         self.count = 0
14 
15     async def readline(self):
16         self.count += 1
17         if self.count == 100:
18             return None
19         return self.count
20 
21     def __aiter__(self):
22         return self
23 
24     async def __anext__(self):
25         value = await self.readline()
26         if value == None:
27             raise StopAsyncIteration
28         return value
29 
30 
31 async def task_func():
32     reader_obj = Reader()
33     async for value in reader_obj:
34         print(value)
35 
36 
37 if __name__ == '__main__':
38     asyncio.run(task_func())

3、运行结果

输出1-99的数字，这里忽略结果

 

posted @ 2022-09-24 17:01  小粉优化大师  阅读(111)  评论(0)  编辑  收藏  举报