Demo of PyCharm bug PY-50507

https://youtrack.jetbrains.com/issue/PY-50507

1. Clone this repo locally
2. Run make setup to create a virtualenv and install uvicorn
3. Install standard uvicorn dependencies with pip install uvicorn[standard] If you get ModuleNotFoundError: No module named 'asgiref' then this is the problem.
4. Run this demo app with either make run, or uvicorn example:app, or clicking Run in PyCharm on the uvicorn app defined in the .run directory.
5. If the service runs successfully you should see INFO: Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
6. Click the link (or open the address manually) to confirm the service serves the expected "Hello, world!" response.
7. Stop the app and instead run the Profiler within PyCharm on the app
8. Observe error: AttributeError: partially initialized module 'logging' has no attribute 'Formatter' (most likely due to a circular import)