Pull request overview

This PR modernizes path handling in predict_multianimal.py by migrating from os.path string manipulation to pathlib.Path objects, improving code readability and maintainability.

Changes:

• Replaced os.path operations with pathlib.Path throughout both functions
• Removed duplicate pickle import and unused os import
• Refactored AnalyzeMultiAnimalVideo to use early return pattern instead of deep nesting

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

@juan-cobos , great well-scoped PR, thanks!

I checked the code and everything is consistent now with the old behavior (except one print statement, which I think you improved).

Please see my comments.

Also, one minor other suggestion:

Since this function writes many different output files with a similar base, it might be helpful to define all output paths at the beginning in one single go. This makes the output contract obvious in one glance (and could avoids filename typos in future refactors):

basename = f"{video.stem}{DLCscorer}"
paths = {
    "h5": destfolder / f"{basename}.h5",
    "full_pickle": destfolder / f"{basename}_full.pickle",
    "meta_pickle": destfolder / f"{basename}_meta.pickle",
    "assemblies_pickle": destfolder / f"{basename}_assemblies.pickle",
    "bpt_features_pickle": destfolder / f"{basename}_bpt_features.pickle",
}