diff --git a/gui/wxpython/gui_core/forms.py b/gui/wxpython/gui_core/forms.py
index 14d87728057..f52090678a8 100644
--- a/gui/wxpython/gui_core/forms.py
+++ b/gui/wxpython/gui_core/forms.py
@@ -2408,9 +2408,15 @@ def OnCheckItem(index=None, flag=None, event=None):
                 pSqlWhere.append(p)
 
         # collect ids
-        pColumnIds = [p["wxId"] for p in pColumn]
-        pLayerIds = [p["wxId"] for p in pLayer]
-        pSqlWhereIds = [p["wxId"] for p in pSqlWhere]
+        pColumnIds = []
+        for p in pColumn:
+            pColumnIds += p["wxId"]
+        pLayerIds = []
+        for p in pLayer:
+            pLayerIds += p["wxId"]
+        pSqlWhereIds = []
+        for p in pSqlWhere:
+            pSqlWhereIds += p["wxId"]
 
         # set wxId-bindings
         if pMap:
diff --git a/python/grass/grassdb/checks.py b/python/grass/grassdb/checks.py
index 052addac248..a458ad71432 100644
--- a/python/grass/grassdb/checks.py
+++ b/python/grass/grassdb/checks.py
@@ -20,7 +20,6 @@
 import grass.grassdb.config as cfg
 import grass.script as gs
 from grass.script import gisenv
-from itertools import starmap
 
 
 def mapset_exists(path: str | os.PathLike[str], location=None, mapset=None) -> bool:
@@ -525,7 +524,10 @@ def get_reasons_locations_not_removable(locations):
 
     Returns messages as list if there were any failed checks, otherwise empty list.
     """
-    return list(starmap(get_reasons_location_not_removable, locations))
+    messages = []
+    for grassdb, location in locations:
+        messages += get_reasons_location_not_removable(grassdb, location)
+    return messages
 
 
 def get_reasons_location_not_removable(grassdb, location):
@@ -556,7 +558,9 @@ def get_reasons_location_not_removable(grassdb, location):
     )
 
     # Append to the list of tuples
-    mapsets = [(grassdb, location, g_mapset) for g_mapset in g_mapsets]
+    mapsets = []
+    for g_mapset in g_mapsets:
+        mapsets.append((grassdb, location, g_mapset))
 
     # Concentenate both checks
     messages += get_reasons_mapsets_not_removable(mapsets, check_permanent=False)
@@ -585,7 +589,9 @@ def get_reasons_grassdb_not_removable(grassdb):
     g_locations = get_list_of_locations(grassdb)
 
     # Append to the list of tuples
-    locations = [(grassdb, g_location) for g_location in g_locations]
+    locations = []
+    for g_location in g_locations:
+        locations.append((grassdb, g_location))
     return get_reasons_locations_not_removable(locations)
 
 
@@ -596,11 +602,12 @@ def get_list_of_locations(dbase):
 
     :return: list of locations (sorted)
     """
-    locations = [
-        os.path.basename(location)
-        for location in glob.glob(os.path.join(dbase, "*"))
-        if os.path.join(location, "PERMANENT") in glob.glob(os.path.join(location, "*"))
-    ]
+    locations = []
+    for location in glob.glob(os.path.join(dbase, "*")):
+        if os.path.join(location, "PERMANENT") in glob.glob(
+            os.path.join(location, "*")
+        ):
+            locations.append(os.path.basename(location))
 
     locations.sort(key=lambda x: x.lower())