Open
Description
Crash report
What happened?
When I run this code on Python 3.11 it runs fine, but if I import typing_minimal (or typing) in reader.py I get this error:
Fatal Python error: _enter_buffered_busy: could not acquire lock for <_io.BufferedReader name='<stdin>'> at interpreter shutdown, possibly due to daemon threads
Python runtime state: finalizing (tstate=0x00007fff13ab6960)
Current thread 0x00003944 (most recent call first):
<no Python frame>
main.py:
import reader
from typing_minimal import Generic, TypeVar
VALUE = TypeVar("VALUE")
class BaseClass(Generic[VALUE]):
def __init__(self):
pass
class SubClass(BaseClass[VALUE]):
pass
reader.thread.start()reader.py:
from sys import stdin
from threading import Thread
# BUG: I get an error when I assign this:
# typing_minimal = __import__("typing_minimal")
thread = Thread(target=lambda: stdin.buffer.read(), daemon=True)typing_minimal.py:
from functools import lru_cache, wraps
def _tp_cache(func):
cached = lru_cache()(func)
@wraps(func)
def inner(*args, **kwds):
return cached(*args, **kwds)
return inner
class TypeVar:
def __init__(self, _):
pass
class _GenericAlias:
def __init__(self, origin):
self.origin = origin
def __eq__(self, other):
if isinstance(other, _GenericAlias):
return self.origin is other.origin
return NotImplemented
def __hash__(self):
return hash(self.origin)
def __mro_entries__(self, _):
return (self.origin,)
class Generic:
@_tp_cache
def __class_getitem__(cls, *_):
return _GenericAlias(cls)I don't understand how this is even possible.
CPython versions tested on:
3.11
Operating systems tested on:
macOS, Windows