Fixes default lists on activitypub dataclasses

bookwyrm/activitypub/book.py

@@ -25,7 +25,7 @@ class Book(ActivityObject):
     librarything_key: str
     goodreads_key: str
 
-    attachment: List[Image] = field(default=lambda: [])
+    attachment: List[Image] = field(default_factory=lambda: [])
     type: str = 'Book'
 
 

bookwyrm/activitypub/note.py

@@ -24,8 +24,8 @@ class Note(ActivityObject):
     cc: List[str]
     content: str
     replies: Dict
-    tag: List[Link] = field(default=lambda: [])
-    attachment: List[Image] = field(default=lambda: [])
+    tag: List[Link] = field(default_factory=lambda: [])
+    attachment: List[Image] = field(default_factory=lambda: [])
     sensitive: bool = False
     type: str = 'Note'
 

bookwyrm/activitypub/person.py

@@ -15,7 +15,7 @@ class Person(ActivityObject):
     summary: str
     publicKey: PublicKey
     endpoints: Dict
-    icon: Image = field(default=lambda: {})
+    icon: Image = field(default_factory=lambda: {})
     bookwyrmUser: bool = False
     manuallyApprovesFollowers: str = False
     discoverable: str = True

bookwyrm/tests/data/ap_quotation.json

@@ -19,8 +19,8 @@
             "mediaType": "image//images/covers/2b4e4712-5a4d-4ac1-9df4-634cc9c7aff3jpg",
             "url": "https://example.com/images/covers/2b4e4712-5a4d-4ac1-9df4-634cc9c7aff3jpg",
             "name": "Cover of \"This Is How You Lose the Time War\""
-            }
-        ],
+        }
+    ],
     "replies": {
         "id": "https://example.com/user/mouse/quotation/13/replies",
         "type": "Collection",