Modernize type hints in engine.py to use Python 3.10+ syntax#3509
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vfdev-5 merged 1 commit intopytorch:masterfrom Feb 3, 2026
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Thanks @aaishwarymishra
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This pull request modernizes the type annotations throughout the
ignite/engine/engine.pyfile by replacing legacytypingtypes (such asOptional,Union,List,Tuple, andDict) with Python 3.10+ syntax (using|for unions and built-in generics likelist,tuple, anddict). These changes improve code readability and align the codebase with current Python best practices.This pr is part of issue #3481