analytics: Remove inheritance from object.

analytics/lib/counts.py

@@ -26,7 +26,7 @@ TIMEDELTA_MAX = timedelta(days=365*1000)
 
 ## Class definitions ##
 
-class CountStat(object):
+class CountStat:
     HOUR = 'hour'
     DAY = 'day'
     FREQUENCIES = frozenset([HOUR, DAY])
@@ -61,7 +61,7 @@ class DependentCountStat(CountStat):
         CountStat.__init__(self, property, data_collector, frequency, interval=interval)
         self.dependencies = dependencies
 
-class DataCollector(object):
+class DataCollector:
     def __init__(self, output_table, pull_function):
         # type: (Type[BaseCount], Optional[Callable[[str, datetime, datetime], int]]) -> None
         self.output_table = output_table

analytics/models.py

@@ -56,12 +56,12 @@ class BaseCount(models.Model):
     value = models.BigIntegerField()  # type: int
     anomaly = models.ForeignKey(Anomaly, null=True)  # type: Optional[Anomaly]
 
-    class Meta(object):
+    class Meta:
         abstract = True
 
 class InstallationCount(BaseCount):
 
-    class Meta(object):
+    class Meta:
         unique_together = ("property", "subgroup", "end_time")
 
     def __str__(self):
@@ -71,7 +71,7 @@ class InstallationCount(BaseCount):
 class RealmCount(BaseCount):
     realm = models.ForeignKey(Realm)
 
-    class Meta(object):
+    class Meta:
         unique_together = ("realm", "property", "subgroup", "end_time")
         index_together = ["property", "end_time"]
 
@@ -83,7 +83,7 @@ class UserCount(BaseCount):
     user = models.ForeignKey(UserProfile)
     realm = models.ForeignKey(Realm)
 
-    class Meta(object):
+    class Meta:
         unique_together = ("user", "property", "subgroup", "end_time")
         # This index dramatically improves the performance of
         # aggregating from users to realms
@@ -97,7 +97,7 @@ class StreamCount(BaseCount):
     stream = models.ForeignKey(Stream)
     realm = models.ForeignKey(Realm)
 
-    class Meta(object):
+    class Meta:
         unique_together = ("stream", "property", "subgroup", "end_time")
         # This index dramatically improves the performance of
         # aggregating from streams to realms