add CatalogSlice class inheriting from Slice

Author: attila-papai

labelbox/__init__.py

@@ -27,4 +27,4 @@
 from labelbox.schema.resource_tag import ResourceTag
 from labelbox.schema.project_resource_tag import ProjectResourceTag
 from labelbox.schema.media_type import MediaType
-from labelbox.schema.slice import Slice
+from labelbox.schema.slice import Slice, CatalogSlice

labelbox/client.py

@@ -33,7 +33,7 @@
 from labelbox.schema.user import User
 from labelbox.schema.project import Project
 from labelbox.schema.role import Role
-from labelbox.schema.slice import Slice
+from labelbox.schema.slice import CatalogSlice
 
 from labelbox.schema.media_type import MediaType
 
@@ -1213,7 +1213,7 @@ def _format_failed_rows(rows: List[str],
                 )
             time.sleep(sleep_time)
 
-    def get_slice(self, slice_id) -> Slice:
+    def get_slice(self, slice_id) -> CatalogSlice:
         """
         Fetches a Slice by ID.
 
@@ -1235,4 +1235,4 @@ def get_slice(self, slice_id) -> Slice:
             }
         """
         res = self.execute(query_str, {'id': slice_id})
-        return Entity.Slice(self, res['getSavedQuery'])
+        return Entity.CatalogSlice(self, res['getSavedQuery'])

labelbox/schema/slice.py

@@ -5,12 +5,24 @@
 
 
 class Slice(DbObject):
+    """
+    A Slice is a saved set of filters (saved query) used to find data rows matching a certain criteria
+
+    Attributes:
+        name (datetime)
+        description (datetime)
+        created_at (datetime)
+        updated_at (datetime)
+        filter (json)
+    """
     name = Field.String("name")
     description = Field.String("description")
     created_at = Field.DateTime("created_at")
     updated_at = Field.DateTime("updated_at")
     filter = Field.Json("filter")
 
+
+class CatalogSlice(Slice):
     def get_data_row_ids(self) -> List[str]:
         """
         Fetches all data row ids that match this Slice