dict keys form python2 server returns as bytes in python3 client

[Shiplu Mokaddim]

So I have this server.

import zerorpc

class MyServer(object):

    def method(self):

        print("method is called")

        return {'key': 'value'}

server = zerorpc.Server(MyServer(), heartbeat=None)

server.bind("tcp://0.0.0.0:9999")

try:

    zerorpc.gevent.spawn(server.run)

    while True:

        zerorpc.gevent.sleep(1)

except KeyboardInterrupt:

    print("KeyboardInterrupt Received!")

    server.close()

I run it with python2 `python2 s.py`

Then on a different terminal, I call the method with python3 virtual environment. And I get this result

(zerorpc) $ python3 ~/venv/zerorpc/bin/zerorpc tcp://0.0.0.0:9999 method

connecting to "tcp://0.0.0.0:9999"

{b'key': b'value'}

I expected this to be {'key': 'value'}. How can I get the expected value?

I have a workaround in place. I return everything in JSON encoded string. And then on the client-side, I decode it. But I really don't want to perform encoding myself as It's been done on the wire-level of zerorpc.

In python3 (3.6.3) I have these packages.

future==0.17.1

gevent==1.3.7

msgpack-python==0.5.6

pyzmq==17.1.0

zerorpc==0.6.1

In python2 (2.7.12) I have these

future==0.16.0

gevent==1.3.5

msgpack-python==0.5.6

pyzmq==17.1.0

zerorpc==0.6.1

[François-Xavier Bourlet]

read this: https://portingguide.readthedocs.io/en/latest/strings.html

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[shiplu]

Thanks, François for the link. I discovered it when I put a mixture of both str and Unicode in dict. 

If I use  [{u'key': u'value'}, {'key': 'value'}], The result is [{'key': 'value'},  {b'key': b'value'}]. it means I have to encode my string literales manually (either calling .encode() or use `u` prefix).

Thanks again for your help

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Shiplu.Mokadd.im
Unix Hacker

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[François-Xavier Bourlet]

You got this :)

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