Overview
Uvicorn 0.24, released on November 4, 2023, adds official Python 3.12 support and the UVICORN_APP environment variable.
Main Features
Python 3.12 and UVICORN_APP
Python 3.12 is now fully supported. The new UVICORN_APP variable lets you specify the ASGI application without a command-line argument.
python
# With the environment variable
# export UVICORN_APP=myapp:app
# uvicorn
# Equivalent to:
# uvicorn myapp:app
import uvicorn
import os
os.environ['UVICORN_APP'] = 'myapp:app'
uvicorn.run(host='0.0.0.0', port=8000)