Problem getting a python project running in the Aspire AppHost

[mrjavaguy]

Environment: Python 3.10, .NET 8.0, Windows using WSL Ubuntu 24.04.1

To start with I am a python newbie, only done simple scripts in the past.

I have the following code in my Program.cs file

var pythonVersion = PythonUtils.GetPythonVersion();
var pythonVersionMajor = pythonVersion.Split('.')[0];
var pythonVersionMinor = pythonVersion.Split('.')[1];
var pythonPath = $".venv/lib/python{pythonVersionMajor}.{pythonVersionMinor}/site-packages";
Console.WriteLine($"Python version: {pythonVersion}");
Console.WriteLine($"Python path: {pythonPath}");
var triage = builder.AddUvicornApp("triage", "../../python/triage", "src.main:app")
                    .WithExternalHttpEndpoints()
                    .WithReference(pubSub)
                    .WithReference(postgres)
                    .WithDaprSidecar()
                    .WithHttpEndpoint(env: "PORT")
                    .WithOtlpExporter()
                    .WithEnvironment("PYTHONPATH", pythonPath)
                    .WaitFor(redis)
                    .WaitFor(postgres);

which was the only way I could get the python project to run. None of the examples that I have seen require the PYTHONPATH to be set, however if I do not set it, I get the following error in the Aspire CONSOLE log.

ModuleNotFoundError: No module named 'opentelemetry'
Traceback (most recent call last):
  File "/home/eholton/.pyenv/versions/3.10.4/bin/uvicorn", line 8, in <module>
    sys.exit(main())
  File "/home/eholton/.pyenv/versions/3.10.4/lib/python3.10/site-packages/click/core.py", line 1157, in _call_
    return self.main(*args, **kwargs)
  File "/home/eholton/.pyenv/versions/3.10.4/lib/python3.10/site-packages/click/core.py", line 1078, in main
    rv = self.invoke(ctx)
  File "/home/eholton/.pyenv/versions/3.10.4/lib/python3.10/site-packages/click/core.py", line 1434, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/eholton/.pyenv/versions/3.10.4/lib/python3.10/site-packages/click/core.py", line 783, in invoke
    return __callback(*args, **kwargs)
  File "/home/eholton/.pyenv/versions/3.10.4/lib/python3.10/site-packages/uvicorn/main.py", line 410, in main
    run(
  File "/home/eholton/.pyenv/versions/3.10.4/lib/python3.10/site-packages/uvicorn/main.py", line 577, in run
    server.run()
  File "/home/eholton/.pyenv/versions/3.10.4/lib/python3.10/site-packages/uvicorn/server.py", line 65, in run
    return asyncio.run(self.serve(sockets=sockets))
  File "/home/eholton/.pyenv/versions/3.10.4/lib/python3.10/asyncio/runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "uvloop/loop.pyx", line 1517, in uvloop.loop.Loop.run_until_complete
  File "/home/eholton/.pyenv/versions/3.10.4/lib/python3.10/site-packages/uvicorn/server.py", line 69, in serve
    await self._serve(sockets)
  File "/home/eholton/.pyenv/versions/3.10.4/lib/python3.10/site-packages/uvicorn/server.py", line 76, in _serve
    config.load()
  File "/home/eholton/.pyenv/versions/3.10.4/lib/python3.10/site-packages/uvicorn/config.py", line 434, in load
    self.loaded_app = import_from_string(self.app)
  File "/home/eholton/.pyenv/versions/3.10.4/lib/python3.10/site-packages/uvicorn/importer.py", line 22, in import_from_string
    raise exc from None
  File "/home/eholton/.pyenv/versions/3.10.4/lib/python3.10/site-packages/uvicorn/importer.py", line 19, in import_from_string
    module = importlib.import_module(module_str)
  File "/home/eholton/.pyenv/versions/3.10.4/lib/python3.10/importlib/_init_.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 883, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "/home/eholton/code/work/SharedComponents/document-service-code/src/python/triage/src/main.py", line 10, in <module>
    from common.Models.Events.StartTriage import StartTriage
ModuleNotFoundError: No module named 'common'

if I run the command locally .venv/bin/opentelemetry-instrument --traces_exporter otlp --logs_exporter console,otlp --metrics_exporter otlp uvicorn src.main:app, I get the same error

If I run the command with poetry run .venv/bin/opentelemetry-instrument --traces_exporter otlp --logs_exporter console,otlp --metrics_exporter otlp uvicorn src.main:app, it works.

What am I doing wrong?