trio.move_on_after and trio.fail_after previously set the deadline relative to initialization time, instead of more intuitively upon entering the context manager. This might change timeouts if a program relied on this behavior. If you want to restore previous behavior you should instead use trio.move_on_at(trio.current_time() + ...).
flake8-async has a new rule to catch this, in case you're supporting older trio versions. See ASYNC122. (python-trio/trio#2512)
Features
CancelScope.relative_deadline and CancelScope.is_relative added, as well as a relative_deadline parameter to __init__. This allows initializing scopes ahead of time, but where the specified relative deadline doesn't count down until the scope is entered. (python-trio/trio#2512)
trio.Lock and trio.StrictFIFOLock will now raise trio.BrokenResourceError when trio.Lock.acquire would previously stall due to the owner of the lock exiting without releasing the lock. (python-trio/trio#3035)
trio.move_on_at, trio.move_on_after, trio.fail_at and trio.fail_after now accept shield as a keyword argument. If specified, it provides an initial value for the ~trio.CancelScope.shield attribute of the trio.CancelScope object created by the context manager. (python-trio/trio#3052)
Added trio.lowlevel.add_parking_lot_breaker and trio.lowlevel.remove_parking_lot_breaker to allow creating custom lock/semaphore implementations that will break their underlying parking lot if a task exits unexpectedly. trio.lowlevel.ParkingLot.break_lot is also added, to allow breaking a parking lot intentionally. (python-trio/trio#3081)
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Updates the requirements on trio to permit the latest version.
Release notes
Sourced from trio's releases.
Commits
11a7fc6
Bump version to 0.27.02a66a0d
Merge pull request #3081 from jakkdl/break_the_lot92f9799
fix test. polish comments and testsb826210
Merge branch 'main' into break_the_lot1d7ece3
make broken_by attribute a list, clean up testsd0158fa
[pre-commit.ci] pre-commit autoupdate (#3102)b81e297
Merge remote-tracking branch 'origin/main' into break_the_lotcc97cca
remove warning on task exit5d9067b
Add documentation forstatistics()
andaclose()
on memory channels (#3101)7a1ce5b
raise brokenresourceerror if registering an already exited task. fix docstrin...Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
@dependabot rebase
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