ubantu16.04 启动ryu-manager时报错

Question

Traceback (most recent call last):
File "/usr/local/bin/ryu-manager", line 9, in
load_entry_point('ryu==4.34', 'console_scripts', 'ryu-manager')()
File "/usr/lib/python2.7/dist-packages/pkg_resources/init.py", line 542, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "/usr/lib/python2.7/dist-packages/pkg_resources/init.py", line 2569, in load_entry_point
return ep.load()
File "/usr/lib/python2.7/dist-packages/pkg_resources/init.py", line 2229, in load
return self.resolve()
File "/usr/lib/python2.7/dist-packages/pkg_resources/init.py", line 2235, in resolve
module = import(self.module_name, fromlist=['name'], level=0)
File "/usr/local/lib/python2.7/dist-packages/ryu/cmd/manager.py", line 33, in
from ryu.app import wsgi
File "/usr/local/lib/python2.7/dist-packages/ryu/app/wsgi.py", line 23, in
from tinyrpc.server import RPCServer
File "/usr/local/lib/python2.7/dist-packages/tinyrpc/init.py", line 4, in
from .protocols import *
File "/usr/local/lib/python2.7/dist-packages/tinyrpc/protocols/init.py", line 15
def init(self) -> None:
^
SyntaxError: invalid syntax

Answer 1

怎么解决的啊？