python asyncio invalid syntax ubuntu

Question

On OS X, my code works fine. Trying the exact code out on ubuntu, I get a syntax error:

ubuntu@home:server$ python3 server.py
  File "server.py", line 39
    async def hello(websocket, path):
            ^
SyntaxError: invalid syntax

I used pip3 install asyncio to install asyncio

I also tried upgrading to python 3.5, but it causes a ton of library errors with other libraries, so far I can't get this working with python 3.5 on ubuntu although it works with python 3.5 on OS X.

async def is new to python3.5. docs.python.org/3.4/library/asyncio-task.html#asyncio.coroutine has an example of doing the same thing in 3.4 — Keozon
– Keozon, Commented Aug 11, 2016 at 20:45

wim · Accepted Answer · 2016-08-11 20:46:01Z

4

You have different versions of python on your OS X machine and your ubuntu machine.

async def syntax was added in python 3.5.

There's no hope of getting that syntax working on python 3.4.

answered Aug 11, 2016 at 20:46

wim

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Comments

Henry · Accepted Answer · 2016-11-18 01:49:27Z

0

Replace your async / await functions with @asyncio.coroutine / yield from syntax and it should work

@asyncio.coroutine
def hello(websocket, path):
    yield from x

answered Nov 18, 2016 at 1:49

Henry

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