A SyntaxError in scripts/segmentation_train.py while using Python3.12+

[qinians-cn]

Title: Invalid escape sequence \* in glob pattern on line 44 causes SyntaxError in Python 3.12+

Description:

On line 44, the code uses the following glob pattern:

elif any(Path(args.data_dir).glob("*\*.nii.gz")):

The string "*\*.nii.gz" contains an invalid escape sequence \*. In Python versions prior to 3.12, this would raise a DeprecationWarning, but starting in Python 3.12, it raises a SyntaxError because \* is not a valid escape sequence.

This breaks compatibility with modern Python versions.

Suggested Fix:

Use rglob for recursive matching (which is likely the intended behavior), or use forward slashes with proper glob syntax:

✅ Recommended:

elif any(Path(args.data_dir).rglob("*.nii.gz")):

Alternatively (for one-level subdirectories only):

elif any(Path(args.data_dir).glob("*/*.nii.gz")):

Using raw strings (e.g., r"*\*.nii.gz") is not advised here because backslashes are not standard in glob patterns—forward slashes work cross-platform with pathlib.

Please update the pattern to ensure compatibility and correctness.