AttributeError: module 'cloudpickle.cloudpickle' has no attribute 'dumps'

[jack-the-hack]

how can i fix this

[felix-albrecht]

I got the same issue using python 3.8 with anaconda.
It seems the files cloudpickle.py and cloudpickle_fast.py in
~/opt/anaconda3/lib/python3.8/site-packages/cloudpickle/
don't define the method dumps.

I eventually "fixed" it by replacing the files with some other files of that name (different version?) I found somewhere on my machine (I have no idea how anaconda works). Somewhere being:
~/opt/anaconda3/pkgs/joblib-0.16.0-py_0/site-packages/joblib/externals/cloudpickle/

Now, osc.start() can be run, but after displaying an empty graph it gives me following error:

PicklingError: Can't pickle <function simple_random_signal at 0x120d779d0>: it's not the same object as main.simple_random_signal

Could you help us here, @devxpy ?

[jaytho]

This is a problem in zproc. The patch here (basically open the serializer.py in zproc, and change 'from cloudpickle import cloudpickle' and change to just 'import cloudpickle' seems to fix this situation.