Replace BaseException with Exception across codebase

[AlexanderSanin]

Summary

Fixes #7401

• Replaced all 17 occurrences of except BaseException with except Exception across 13 files in monai/ and tests/
• Catching BaseException inadvertently suppresses KeyboardInterrupt, SystemExit, and GeneratorExit, which should nearly always propagate
• Exception is the appropriate base class for catchable errors in all these contexts

Files changed

• monai/__init__.py
• monai/config/deviceconfig.py
• monai/utils/tf32.py
• monai/inferers/inferer.py
• monai/data/__init__.py
• monai/apps/auto3dseg/utils.py
• monai/apps/auto3dseg/ensemble_builder.py
• monai/apps/auto3dseg/data_analyzer.py
• monai/apps/detection/metrics/coco.py
• monai/apps/nnunet/nnunetv2_runner.py
• tests/test_utils.py
• tests/networks/nets/test_resnet.py
• tests/apps/detection/networks/test_retinanet.py

Test plan

• All existing unit tests should pass without modification (this is a strict narrowing of catch scope)
• Verify KeyboardInterrupt (Ctrl+C) is no longer silently swallowed during long-running operations

Signed-off-by: Oleksandr Sanin alexaaander.sanin@gmail.com

[coderabbitai]

📝 Walkthrough

Walkthrough

This PR systematically narrows exception handling from BaseException to Exception across 13 library files and 4 test files. The change prevents control-flow exceptions (KeyboardInterrupt, SystemExit) from being caught and suppressed by import-time fallbacks, GPU-to-CPU execution fallbacks, metric computation handlers, and utility initialization blocks. Each change is identical in pattern: a single exception type parameter in an except clause.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~15 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 53.33% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	Title accurately and concisely summarizes the main change: replacing BaseException with Exception across the codebase.
Linked Issues check	✅ Passed	All changes directly address #7401 requirements: 17 occurrences of BaseException replaced with Exception across 13 files to prevent suppression of KeyboardInterrupt and SystemExit.
Out of Scope Changes check	✅ Passed	All changes are narrowly scoped to the stated objective; only exception handler specifications were modified with no unrelated alterations.
Description check	✅ Passed	PR description fully matches the template with all required sections completed: summary, file list, types of changes, and test plan.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[ericspod]

Hi @AlexanderSanin thanks for this update, it looks good to me. I went through the changes and don't see anywhere we needed to catch subtypes of BaseException such as KeyboardInterrupt.