[requirements] paramiko 2.5.0 causing ImportError: cannot import name py31compat

Hello,

paramiko 2.5.0 was released yesterday [1]. It appears to trigger failures in the Kayobe molecule job with the following error [2]:

ImportError: cannot import name py31compat

It's not clear yet why this is happening, since py31compat lives in setuptools. paramiko 2.5.0 includes changes to paramiko/py3compat.py which could be related. For now, we're capping paramiko [3] as it is blocking our gate.

I thought I would share with the list, in case other projects experience similar errors.

Cheers, Pierre

[1] https://pypi.org/project/paramiko/#history [2] http://logs.openstack.org/17/664417/1/check/kayobe-tox-molecule/0370fdd/job-... [3] https://review.opendev.org/#/c/664533/