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Fix crash due to runtime import of typing_extensions #2537

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Merged
pquentin merged 1 commit into from
Jan 18, 2023
Merged

Fix crash due to runtime import of typing_extensions #2537

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7 changes: 4 additions & 3 deletions trio/_core/_run.py
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Original file line number Diff line number Diff line change
Expand Up @@ -23,9 +23,6 @@
from sniffio import current_async_library_cvar
from sortedcontainers import SortedDict

# An unfortunate name collision here with trio._util.Final
from typing_extensions import Final as FinalT

from .. import _core
from .._util import Final, NoPublicConstructor, coroutine_or_error
from ._asyncgens import AsyncGenerators
Expand All @@ -47,6 +44,10 @@
if sys.version_info < (3, 11):
from exceptiongroup import BaseExceptionGroup

if TYPE_CHECKING:
# An unfortunate name collision here with trio._util.Final
from typing_extensions import Final as FinalT

DEADLINE_HEAP_MIN_PRUNE_THRESHOLD: FinalT = 1000

_NO_SEND: FinalT = object()
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