gistfile1.txt

import uwsgi

def hello_world():
    return "Hello World"

uwsgi.register_rpc("hello", hello_world)

print(uwsgi.rpc(None, "hello"))
print(uwsgi.call("hello"))


def application(environ, start_response):
    start_response('200 OK', [('Content-Type', 'text/plain')])

    print(uwsgi.rpc(None, "hello"))
    print(uwsgi.call("hello"))

    return [b'Hello']


uwsgi --http localhost:9090 --wsgi-file test_rpc.py 


Everything works on Python 2
When i tried inside Python3 virtualenv

I get this:

registered shared/inherited RPC function "hello"
Traceback (most recent call last):
  File "test_rpc.py", line 8, in <module>
    print(uwsgi.rpc(None, "hello"))
ValueError: unable to call rpc function