Hi I'm trying to install the Ryu controller but you are getting the
following error message when I'm going to test:
# apt install gcc python-dev libffi-dev libssl-dev libxml2-dev libxslt1-dev
zlib1g-dev
# apt install python-pip
# pip install ryu
# ryu-manager
/usr/local/lib/python2.7/dist-packages/ryu/app/simple_switch.py
Traceback (most recent call last):
File "/ usr / local / bin / ryu-manager", line 7, in <module>
from ryu.cmd.manager import main
File "/usr/local/lib/python2.7/dist-packages/ryu/cmd/manager.py", line
25, in <module>
from ryu import cfg
File "/usr/local/lib/python2.7/dist-packages/ryu/cfg.py", line 17, in
<module>
import oslo_config.cfg
File "/usr/local/lib/python2.7/dist-packages/oslo_config/cfg.py", line
20, in <module>
from collections import abc
ImportError: cannot import name abc
S.O Ubuntu 64 bits 16.04.5
--
Leandro Pereira
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