Cannot import python opencue module from source

[Tilix4]

Describe the bug
When trying to install pycue and pyoutline from source, at import time, it fails with this message:

Python 3.9.14 (main, Mar 30 2023, 18:04:09) 
[GCC 11.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import opencue
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/felix/Documents/Dev/OpenCue/pycue/opencue/__init__.py", line 24, in <module>
    from .cuebot import Cuebot
  File "/home/felix/Documents/Dev/OpenCue/pycue/opencue/cuebot.py", line 34, in <module>
    from opencue.compiled_proto import comment_pb2_grpc
  File "/home/felix/Documents/Dev/OpenCue/pycue/opencue/compiled_proto/comment_pb2_grpc.py", line 5, in <module>
    import comment_pb2 as comment__pb2
ModuleNotFoundError: No module named 'comment_pb2'

To Reproduce
Steps to reproduce the behavior:

1. Follow https://www.opencue.io/docs/getting-started/installing-pycue-and-pyoutline/#option-2-installing-from-source
2. Follow https://www.opencue.io/docs/getting-started/installing-pycue-and-pyoutline/#configuring-and-verifying-the-install

Expected behavior
The import succeeds

Version Number
v0.21.13

Additional context
Ubuntu 22.04

[silviamichele]

Hello, I'm experiencing a similar issue, but in my case, the 'pycue/compiled_proto/' folder doesn't contain the 'comment_pb2_grpc.py' file. I find there's a discussion #763 than solve in your case. Have resolved your problem? If so, could you please share the solution?

[Tilix4]

Hi, the answer came up from the mailing list: https://lists.aswf.io/g/opencue-user/message/679

Long story short: you must run 2to3 -wn -f import rqd/rqd/compiled_proto/*_pb2*.py

I'll close this issue when proper documentation will be written.