New submission from Yurii Karabas <1998uri...@gmail.com>:
New thread doesn't copy context of the parent thread.
The minimal example to reproduce the issue:
```
from threading import Thread
from contextvars import ContextVar
foo: ContextVar[str] = ContextVar("foo")
def temp():
print(foo.get())
foo.set("bar")
t = Thread(target=temp)
t.start()
t.join()
```
Is it expected behavior?
PEP 567 I didn't find anything regarding this case.
----------
components: Library (Lib)
messages: 384262
nosy: uriyyo
priority: normal
severity: normal
status: open
title: new thread doesn't copy context of the parent thread
type: behavior
versions: Python 3.10
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue42815>
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