FROM python:3.13-slim
RUN pip install uvloop==0.22.1
ENV PYTHONASYNCIODEBUG=1
COPY repro.py /repro.py
CMD ["python3", "/repro.py"]

import asyncio
import sys
import os

print(f"Python: {sys.version}")
print(f"Platform: {sys.platform}")
print(f"PYTHONASYNCIODEBUG: {os.environ.get('PYTHONASYNCIODEBUG', '<not set>')}")

import uvloop
print(f"uvloop: {uvloop.__version__}")

async def gen():
    yield 1
    yield 2

async def main():
    x = gen()
    await x.__anext__()
    # x goes out of scope on function exit

uvloop.install()
asyncio.run(main())
print("NO CRASH")