Question

asyncssh的入门文档提供了以下hello示例：

import asyncio, asyncssh, sys

async def run_client():
    async with asyncssh.connect('localhost') as conn:
        result = await conn.run('echo "Hello!"', check=True)
        print(result.stdout, end='')

try:
    asyncio.get_event_loop().run_until_complete(run_client())
except (OSError, asyncssh.Error) as exc:
    sys.exit('SSH connection failed: ' + str(exc))

但是，这不会运行，因为Python 3.4不支持异步：

async with asyncssh.connect('localhost', username='squirtle', password='xxxxxxxxxxxx') as conn:
     ^

Answer 1

我去做了，这适合我。

@asyncio.coroutine
def run_client():
        with(yield from asyncssh.connect('localhost', username='root', password='xxxxxxxx')) as conn:
                result = yield from conn.run('ls', check=True)
                print(result.stdout, end='')

Answer 2

在 Python 3.5 中引入了

async关键字，您应该在早期版本中使用asyncio.corutine。

检查PEP492和Python 3.5 release notes

此外，您还要查看此SO Question and answers

Python 3.4中的“异步”

2 个答案: