ImportError: cannot import name spec

[MrKiven]

Hi, we have got this error

ImportError: cannot import name spec

we use librabbitmq==1.6.1, kombu==3.0.33

Traceback here:

``
File "/srv/ves/arch.note/.venv/lib/python2.7/site-packages/kombu/init.py", line 67, in getattr

module = import(object_origins[name], None, None, [name])

File "/srv/ves/arch.note/.venv/lib/python2.7/site-packages/kombu/connection.py", line 19, in

from kombu import exceptions

File "/srv/ves/arch.note/.venv/lib/python2.7/site-packages/kombu/exceptions.py", line 12, in

from amqp import ChannelError, ConnectionError, ResourceError

File "/srv/ves/arch.note/.venv/lib/python2.7/site-packages/amqp/init.py", line 39, in

from .basic_message import Message # noqa

File "/srv/ves/arch.note/.venv/lib/python2.7/site-packages/amqp/basic_message.py", line 19, in

from . import spec

ImportError: cannot import name spec
``

[air-upc]

Before Python version 2.7.7, the struct.pack() function required a native string as its format argument.

[MrKiven]

anyone can check it? @ask

[bastbnl]

I'm seeing the same message using python 2.7.3 using amqp==2.0.0 since I've upgraded amqp-1.4.9 this morning.

...
from amqp import ChannelError, ConnectionError, ResourceError
File "/var/www/brownpapersession/dev/env-brownpapersession/local/lib/python2.7/site-packages/amqp/init.py", line 39, in
from .basic_message import Message # noqa
File "/var/www/brownpapersession/dev/env-brownpapersession/local/lib/python2.7/site-packages/amqp/basic_message.py", line 19, in
from . import spec
ImportError: cannot import name spec

[ask]

Hey!

Kombu 3.x should not be used with amqp 2.0, and the kombu requirements have reflected this since the release of 3.0.0:
https://github.com/celery/kombu/blob/3.0/requirements/default.txt

If you use kombu 3.x, you should keep to the 1.4 series of py-amqp!

[ask]

That said, I don't know if kombu 3.x is actually incompatible, and I don't understand why this error is happening.

The earliest 2.7 version I have available is 2.7.8 and importing amqp.spec works there. Same for 2.7.10.

Could you try to do a pip install vine to see if that helps?

[bastbnl]

I believe it has to do with the imports within the amqp module.

I've done some changes to get the code imported on python 2.7.3 and created pr #88. My virtualenv has vine 1.1.0, kombu 3.0.35 with celery 3.1.23 (and a lot more). I needed one more change to get celery 3.1.23 running with amqp 2.0.0 as well, but I'll create a separate pr for that

[MrKiven]

Actually we rely librabbitmq==1.6.1,

but librabbitmq rely amqp>=1.4.6

https://github.com/celery/librabbitmq/blob/v1.6.1/requirements/default.txt