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# -*- test-case-name: twisted.logger.test.test_capture -*-
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Context manager for capturing logs.
"""
from collections.abc import Iterator, Sequence
from contextlib import contextmanager
from typing import cast
from twisted.logger import globalLogPublisher
from ._interfaces import ILogObserver, LogEvent
@contextmanager
def capturedLogs() -> Iterator[Sequence[LogEvent]]:
events: list[LogEvent] = []
observer = cast(ILogObserver, events.append)
globalLogPublisher.addObserver(observer)
yield events
globalLogPublisher.removeObserver(observer)
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