MAINT: Remove implicit inheritance from object class (#15236)

Inheriting from object was necessary for Python 2 compatibility to use
new-style classes. In Python 3, this is unnecessary as there are no
old-style classes.

Dropping the object is more idiomatic Python.

4 files changed, 4 insertions, 4 deletions

diff --git a/benchmarks/benchmarks/bench_function_base.py b/benchmarks/benchmarks/bench_function_base.py
index 3b4647773..b1e592749 100644
--- a/benchmarks/benchmarks/bench_function_base.py
+++ b/benchmarks/benchmarks/bench_function_base.py
@@ -104,7 +104,7 @@ def memoize(f):
     return f
 
 
-class SortGenerator(object):
+class SortGenerator:
     # The size of the unsorted area in the "random unsorted area"
     # benchmarks
     AREA_SIZE = 100
diff --git a/benchmarks/benchmarks/bench_overrides.py b/benchmarks/benchmarks/bench_overrides.py
index f03120efa..e44951785 100644
--- a/benchmarks/benchmarks/bench_overrides.py
+++ b/benchmarks/benchmarks/bench_overrides.py
@@ -33,7 +33,7 @@ def mock_concatenate(arrays, axis=0, out=None):
     pass
 
 
-class DuckArray(object):
+class DuckArray:
     def __array_function__(self, func, types, args, kwargs):
         pass
 
diff --git a/benchmarks/benchmarks/bench_ufunc.py b/benchmarks/benchmarks/bench_ufunc.py
index 73159bd97..9f45a7257 100644
--- a/benchmarks/benchmarks/bench_ufunc.py
+++ b/benchmarks/benchmarks/bench_ufunc.py
@@ -150,7 +150,7 @@ class Scalar(Benchmark):
         (self.y + self.z)
 
 
-class ArgPack(object):
+class ArgPack:
     __slots__ = ['args', 'kwargs']
     def __init__(self, *args, **kwargs):
         self.args = args
diff --git a/benchmarks/benchmarks/common.py b/benchmarks/benchmarks/common.py
index c6037dea9..3fd81a164 100644
--- a/benchmarks/benchmarks/common.py
+++ b/benchmarks/benchmarks/common.py
@@ -110,5 +110,5 @@ def get_indexes_rand_():
     return indexes_rand_
 
 
-class Benchmark(object):
+class Benchmark:
     goal_time = 0.25