Stop sub-classing object (#8249)

synapse/events/__init__.py

@@ -96,7 +96,7 @@ class DefaultDictProperty(DictProperty):
         return instance._dict.get(self.key, self.default)
 
 
-class _EventInternalMetadata(object):
+class _EventInternalMetadata:
     __slots__ = ["_dict"]
 
     def __init__(self, internal_metadata_dict: JsonDict):

synapse/events/builder.py

@@ -36,7 +36,7 @@ from synapse.util.stringutils import random_string
 
 
 @attr.s(slots=True, cmp=False, frozen=True)
-class EventBuilder(object):
+class EventBuilder:
     """A format independent event builder used to build up the event content
     before signing the event.
 
@@ -164,7 +164,7 @@ class EventBuilder(object):
         )
 
 
-class EventBuilderFactory(object):
+class EventBuilderFactory:
     def __init__(self, hs):
         self.clock = hs.get_clock()
         self.hostname = hs.hostname

synapse/events/spamcheck.py

@@ -25,7 +25,7 @@ if MYPY:
     import synapse.server
 
 
-class SpamChecker(object):
+class SpamChecker:
     def __init__(self, hs: "synapse.server.HomeServer"):
         self.spam_checkers = []  # type: List[Any]
 

synapse/events/third_party_rules.py

@@ -18,7 +18,7 @@ from synapse.events.snapshot import EventContext
 from synapse.types import Requester
 
 
-class ThirdPartyEventRules(object):
+class ThirdPartyEventRules:
     """Allows server admins to provide a Python module implementing an extra
     set of rules to apply when processing events.
 

synapse/events/utils.py

@@ -322,7 +322,7 @@ def serialize_event(
     return d
 
 
-class EventClientSerializer(object):
+class EventClientSerializer:
     """Serializes events that are to be sent to clients.
 
     This is used for bundling extra information with any events to be sent to

synapse/events/validator.py

@@ -20,7 +20,7 @@ from synapse.events.utils import validate_canonicaljson
 from synapse.types import EventID, RoomID, UserID
 
 
-class EventValidator(object):
+class EventValidator:
     def validate_new(self, event, config):
         """Validates the event has roughly the right format