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qsnow6
V2EX  ›  Python

Python 协程 BUG?

  •  
  •   qsnow6 · Feb 10, 2017 · 3112 views
    This topic created in 3516 days ago, the information mentioned may be changed or developed.

    参照aiohttp 官网的教程,写了个示例,发现语法报错。

    import asyncio
    import aiohttp
    async with aiohttp.ClientSession() as session:
        async with session.get('https://api.github.com/events') as resp:
            print(resp.status)
            print(await resp.text())
    -------------
      File "/Users/zed/PycharmProjects/example/used_aiohttp/1.py", line 3
        async with aiohttp.ClientSession() as session:
                 ^
    SyntaxError: invalid syntax
    

    现在是不支持这样的写法了吗

    async with xxxxx as xxxx:
        pass
    
    11 replies  •  2017-02-10 11:11:06 +08:00
    freestyle
        1
    freestyle  
       Feb 10, 2017
    得用 async def xxx(): 包起来
    qsnow6
        3
    qsnow6  
    OP
       Feb 10, 2017
    @freestyle 包起来是可以的
    但是看官网的示例是这么写的,还以为是我的姿势不对。。
    qsnow6
        4
    qsnow6  
    OP
       Feb 10, 2017
    qsnow6
        5
    qsnow6  
    OP
       Feb 10, 2017
    ![]( )
    qsnow6
        6
    qsnow6  
    OP
       Feb 10, 2017
    ![]( )
    ?
    qsnow6
        7
    qsnow6  
    OP
       Feb 10, 2017
    ![]( )
    a87150
        8
    a87150  
       Feb 10, 2017
    ```
    import asyncio
    import aiohttp

    async def fetch():
    async with aiohttp.ClientSession() as session:
    async with session.get('https://api.github.com/events') as r:
    print(r.status)
    print(await r.text())

    loop = asyncio.get_event_loop()
    loop.run_until_complete(fetch())
    loop.close()
    ```
    我估计官网是默认你会用 asyncio
    a87150
        9
    a87150  
       Feb 10, 2017
    原来回复不能用 markdown
    LukeXuan
        10
    LukeXuan  
       Feb 10, 2017 via Android
    其实我觉得挺需要一个 apython 直接在 async def 环境内执行. py 文件
    chy373180
        11
    chy373180  
       Feb 10, 2017
    要写在 async def 内
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