Add dataset slicing and fix remove annotations

icevision/core/record_components.py

@@ -274,6 +274,7 @@ def _autofix(self) -> Dict[str, bool]:
 
     def _remove_annotation(self, i):
         self.label_ids.pop(i)
+        self.labels.pop(i)
 
     def _aggregate_objects(self) -> Dict[str, List[dict]]:
         return {**super()._aggregate_objects(), "labels": self.label_ids}

icevision/data/dataset.py

@@ -32,13 +32,16 @@ def __len__(self):
         return len(self.records)
 
     def __getitem__(self, i):
-        record = self.records[i].load()
-        if self.tfm is not None:
-            record = self.tfm(record)
+        if isinstance(i, slice):
+            return self.__class__(self.records[i], self.tfm)
         else:
-            # HACK FIXME
-            record.set_img(np.array(record.img))
-        return record
+            record = self.records[i].load()
+            if self.tfm is not None:
+                record = self.tfm(record)
+            else:
+                # HACK FIXME
+                record.set_img(np.array(record.img))
+            return record
 
     def __repr__(self):
         return f"<{self.__class__.__name__} with {len(self.records)} items>"

setup.cfg

@@ -48,7 +48,7 @@ inference =
 
 all =
     fastai >=2.5.2,<2.6
-    pytorch-lightning >=1.4.5
+    pytorch-lightning >=1.4.5,<1.7.0
     wandb >=0.10.7
 
 dev =