Bug

Bare except: clauses in the dataset loading code (datasets/taichi_datasets.py, datasets/sky_datasets.py, datasets/taichi_image_datasets.py, datasets/sky_image_datasets.py) catch all exceptions including KeyboardInterrupt and SystemExit. This silently swallows errors during data loading and makes debugging very difficult.

The try blocks wrap a sorted() call with a lambda that calls int() on parts of the filename. When filenames don't match the expected pattern, int() raises ValueError, which is the only expected exception here.

Fix

Replaced bare except: with except ValueError: to only catch the expected exception from int() conversion failures, allowing unexpected errors to propagate normally.