Bug report
Bug description:
Accessing the Token.MISSING class var from the contextvars module within a subinterpreter raises an AttributeError. E.g. the following script:
import contextvars from concurrent.interpreters import create, get_current print(get_current(), contextvars.Token, getattr(contextvars.Token, "MISSING", None)) ip1 = create() ip1.exec(""" import contextvars from concurrent.interpreters import get_current print(get_current(), contextvars.Token, getattr(contextvars.Token, "MISSING", "'doesn't exist'")) """)
outputs
Interpreter(0) <class '_contextvars.Token'> <Token.MISSING>
Interpreter(1) <class '_contextvars.Token'> 'doesn't exist'
CPython versions tested on:
3.14
Operating systems tested on:
Linux