- Replace Dict, List, Set, Tuple with dict, list, set, tuple throughout codebase
- Add missing type annotations to crew_events.py methods
- Add proper type annotations to test_crew_cancellation.py
- Use type: ignore[method-assign] comments for mock assignments
- Maintain backward compatibility while modernizing type hints
This resolves lint and type-checker failures in CI while preserving
the cancellation functionality.
Co-Authored-By: João <joao@crewai.com>
- Add threading.Event-based cancellation mechanism to Crew class
- Implement cancel(), is_cancelled(), and _reset_cancellation() methods
- Add cancellation checks in _execute_tasks() main execution loop
- Handle cancellation in async task processing (_process_async_tasks)
- Create CrewKickoffCancelledEvent following existing event patterns
- Add comprehensive tests for cancellation functionality
- Support graceful shutdown allowing current task to complete
- Ensure thread-safe cancellation across sequential and hierarchical processes
Fixes#3445
Co-Authored-By: João <joao@crewai.com>
