remove empty dict and list defaults

Author: d-j-hatton

src/murfey/server/ispyb.py

@@ -187,8 +187,9 @@ def do_update_atlas(
         pixel_size: float,
         slot: int | None,
         collection_mode: str | None = None,
-        color_flags: dict[str, str | int] = {},
+        color_flags: dict[str, str | int] | None = None,
     ):
+        color_flags = color_flags or {}
         try:
             with ISPyBSession() as db:
                 atlas = db.query(Atlas).filter(Atlas.atlasId == atlas_id).one()
@@ -216,8 +217,9 @@ def do_insert_grid_square(
         atlas_id: int,
         grid_square_id: int,
         grid_square_parameters: GridSquareParameters,
-        color_flags: dict[str, int] = {},
+        color_flags: dict[str, int] | None = None,
     ):
+        color_flags = color_flags or {}
         # most of this is for mypy
         if (
             grid_square_parameters.pixel_size is not None
@@ -266,8 +268,9 @@ def do_update_grid_square(
         self,
         grid_square_id: int,
         grid_square_parameters: GridSquareParameters,
-        color_flags: dict[str, int] = {},
+        color_flags: dict[str, int] | None = None,
     ):
+        color_flags = color_flags or {}
         try:
             with ISPyBSession() as db:
                 grid_square: GridSquare = (

src/murfey/workflows/clem/register_preprocessing_results.py

@@ -199,16 +199,17 @@ def _register_clem_image_series(
 
 
 def _get_color_flags(
-    colors: Collection[str] = [],
+    colors: Collection[str] | None = None,
 ):
+    colors = colors or []
     return {
         color_columns[color]: (1 if color in color_columns.keys() else 0)
         for color in colors
     }
 
 
 def _determine_collection_mode(
-    colors: Collection[str] = [],
+    colors: Collection[str] | None = None,
 ):
     if not colors:
         logger.warning("No colours were present in returned result")