Fix crash that occurs when no detectors are present

LabGym/detector.py

@@ -293,9 +293,9 @@ def delete(self) -> None:
 
 
 def get_detector_names() -> list[str]:
-    """Return the names of all saved detectors."""
+    """Return the names of all saved detectors in sorted order."""
     ignore = ["__pycache__", "__init__", "__init.py__"]
-    return [path.name for path in DETECTOR_FOLDER.glob("*") if path.is_dir() and path.name not in ignore]
+    return sorted([path.name for path in DETECTOR_FOLDER.glob("*") if path.is_dir() and path.name not in ignore])
 
 
 def get_annotation_class_names(annotation_path: str) -> list[str]:

LabGym/gui/analysis/analyze_behaviors.py

@@ -423,7 +423,7 @@ def select_method(self, event):
         if self.behavior_mode <= 1:
             methods = [
                 "Use trained Detectors (versatile but slow)",
-                "Subtract background (fast but requires static background & stable illumination)", 
+                "Subtract background (fast but requires static background & stable illumination)",
             ]
         else:
             methods = ["Use trained Detectors (versatile but slow)"]
@@ -612,7 +612,6 @@ def select_method(self, event):
                 self.animal_number = {}
 
                 detectors = get_detector_names()
-                detectors.sort()
                 if "Choose a new directory of the Detector" not in detectors:
                     detectors.append("Choose a new directory of the Detector")
 

LabGym/gui/training/detectors.py

@@ -546,7 +546,7 @@ def delete_detector(self, event):
             self,
             message="Select a Detector to delete",
             caption="Delete a Detector",
-            choices=get_detector_names().sort(),
+            choices=get_detector_names(),
         )
         if dialog.ShowModal() != wx.ID_OK:
             dialog.Destroy()