Refs #33476 -- Reformatted code with Black.

tests/admin_changelist/admin.py

@@ -12,12 +12,14 @@ site.register(User, UserAdmin)
 
 class CustomPaginator(Paginator):
     def __init__(self, queryset, page_size, orphans=0, allow_empty_first_page=True):
-        super().__init__(queryset, 5, orphans=2, allow_empty_first_page=allow_empty_first_page)
+        super().__init__(
+            queryset, 5, orphans=2, allow_empty_first_page=allow_empty_first_page
+        )
 
 
 class EventAdmin(admin.ModelAdmin):
-    date_hierarchy = 'date'
-    list_display = ['event_date_func']
+    date_hierarchy = "date"
+    list_display = ["event_date_func"]
 
     @admin.display
     def event_date_func(self, event):
@@ -31,21 +33,21 @@ site.register(Event, EventAdmin)
 
 
 class ParentAdmin(admin.ModelAdmin):
-    list_filter = ['child__name']
-    search_fields = ['child__name']
-    list_select_related = ['child']
+    list_filter = ["child__name"]
+    search_fields = ["child__name"]
+    list_select_related = ["child"]
 
 
 class ParentAdminTwoSearchFields(admin.ModelAdmin):
-    list_filter = ['child__name']
-    search_fields = ['child__name', 'child__age']
-    list_select_related = ['child']
+    list_filter = ["child__name"]
+    search_fields = ["child__name", "child__age"]
+    list_select_related = ["child"]
 
 
 class ChildAdmin(admin.ModelAdmin):
-    list_display = ['name', 'parent']
+    list_display = ["name", "parent"]
     list_per_page = 10
-    list_filter = ['parent', 'age']
+    list_filter = ["parent", "age"]
 
     def get_queryset(self, request):
         return super().get_queryset(request).select_related("parent")
@@ -56,32 +58,32 @@ class CustomPaginationAdmin(ChildAdmin):
 
 
 class FilteredChildAdmin(admin.ModelAdmin):
-    list_display = ['name', 'parent']
+    list_display = ["name", "parent"]
     list_per_page = 10
 
     def get_queryset(self, request):
-        return super().get_queryset(request).filter(name__contains='filtered')
+        return super().get_queryset(request).filter(name__contains="filtered")
 
 
 class BandAdmin(admin.ModelAdmin):
-    list_filter = ['genres']
+    list_filter = ["genres"]
 
 
 class NrOfMembersFilter(admin.SimpleListFilter):
-    title = 'number of members'
-    parameter_name = 'nr_of_members_partition'
+    title = "number of members"
+    parameter_name = "nr_of_members_partition"
 
     def lookups(self, request, model_admin):
         return [
-            ('5', '0 - 5'),
-            ('more', 'more than 5'),
+            ("5", "0 - 5"),
+            ("more", "more than 5"),
         ]
 
     def queryset(self, request, queryset):
         value = self.value()
-        if value == '5':
+        if value == "5":
             return queryset.filter(nr_of_members__lte=5)
-        if value == 'more':
+        if value == "more":
             return queryset.filter(nr_of_members__gt=5)
 
 
@@ -93,44 +95,44 @@ site.register(Band, BandCallableFilterAdmin)
 
 
 class GroupAdmin(admin.ModelAdmin):
-    list_filter = ['members']
+    list_filter = ["members"]
 
 
 class ConcertAdmin(admin.ModelAdmin):
-    list_filter = ['group__members']
-    search_fields = ['group__members__name']
+    list_filter = ["group__members"]
+    search_fields = ["group__members__name"]
 
 
 class QuartetAdmin(admin.ModelAdmin):
-    list_filter = ['members']
+    list_filter = ["members"]
 
 
 class ChordsBandAdmin(admin.ModelAdmin):
-    list_filter = ['members']
+    list_filter = ["members"]
 
 
 class InvitationAdmin(admin.ModelAdmin):
-    list_display = ('band', 'player')
-    list_select_related = ('player',)
+    list_display = ("band", "player")
+    list_select_related = ("player",)
 
 
 class DynamicListDisplayChildAdmin(admin.ModelAdmin):
-    list_display = ('parent', 'name', 'age')
+    list_display = ("parent", "name", "age")
 
     def get_list_display(self, request):
         my_list_display = super().get_list_display(request)
-        if request.user.username == 'noparents':
+        if request.user.username == "noparents":
             my_list_display = list(my_list_display)
-            my_list_display.remove('parent')
+            my_list_display.remove("parent")
         return my_list_display
 
 
 class DynamicListDisplayLinksChildAdmin(admin.ModelAdmin):
-    list_display = ('parent', 'name', 'age')
-    list_display_links = ['parent', 'name']
+    list_display = ("parent", "name", "age")
+    list_display_links = ["parent", "name"]
 
     def get_list_display_links(self, request, list_display):
-        return ['age']
+        return ["age"]
 
 
 site.register(Child, DynamicListDisplayChildAdmin)
@@ -138,8 +140,8 @@ site.register(Child, DynamicListDisplayChildAdmin)
 
 class NoListDisplayLinksParentAdmin(admin.ModelAdmin):
     list_display_links = None
-    list_display = ['name']
-    list_editable = ['name']
+    list_display = ["name"]
+    list_editable = ["name"]
     actions_on_bottom = True
 
 
@@ -148,8 +150,8 @@ site.register(Parent, NoListDisplayLinksParentAdmin)
 
 class SwallowAdmin(admin.ModelAdmin):
     actions = None  # prevent ['action_checkbox'] + list(list_display)
-    list_display = ('origin', 'load', 'speed', 'swallowonetoone')
-    list_editable = ['load', 'speed']
+    list_display = ("origin", "load", "speed", "swallowonetoone")
+    list_editable = ["load", "speed"]
     list_per_page = 3
 
 
@@ -157,29 +159,29 @@ site.register(Swallow, SwallowAdmin)
 
 
 class DynamicListFilterChildAdmin(admin.ModelAdmin):
-    list_filter = ('parent', 'name', 'age')
+    list_filter = ("parent", "name", "age")
 
     def get_list_filter(self, request):
         my_list_filter = super().get_list_filter(request)
-        if request.user.username == 'noparents':
+        if request.user.username == "noparents":
             my_list_filter = list(my_list_filter)
-            my_list_filter.remove('parent')
+            my_list_filter.remove("parent")
         return my_list_filter
 
 
 class DynamicSearchFieldsChildAdmin(admin.ModelAdmin):
-    search_fields = ('name',)
+    search_fields = ("name",)
 
     def get_search_fields(self, request):
         search_fields = super().get_search_fields(request)
-        search_fields += ('age',)
+        search_fields += ("age",)
         return search_fields
 
 
 class EmptyValueChildAdmin(admin.ModelAdmin):
-    empty_value_display = '-empty-'
-    list_display = ('name', 'age_display', 'age')
+    empty_value_display = "-empty-"
+    list_display = ("name", "age_display", "age")
 
-    @admin.display(empty_value='†')
+    @admin.display(empty_value="†")
     def age_display(self, obj):
         return obj.age