Remove all class C(object): syntax, no longer need to inherit from ob…

…ject

04_Object_Oriented_Python/bound_and_unbound_methods.py

@@ -3,7 +3,7 @@
 def f(a, b):
     '''a function f with two arguments'''
     print(a, b)
-class C(object):
+class C:
     name = f
 x = C()
 
@@ -18,15 +18,15 @@ def add(addend, _augend=augend):
     return add
 
 def make_adder_as_bound_method(augend):
-    class Adder(object):
+    class Adder:
         def __init__(self, augend):
             self.augend = augend
         def add(self, addend):
             return addend+self.augend
     return Adder(augend).add
 
 def make_adder_as_callable_instance(augend):
-    class Adder(object):
+    class Adder:
         def __init__(self, augend):
             self.augend = augend
         def __call__(self, addend):

04_Object_Oriented_Python/class_level_methods.py

@@ -1,5 +1,5 @@
 # staticmethod example
-class AClass(object):
+class AClass:
     def astatic():
         print('a static method')
     astatic = staticmethod(astatic)
@@ -8,7 +8,7 @@ def astatic():
 an_instance.astatic()               # prints: a static method
 
 # classmethod example
-class ABase(object):
+class ABase:
     def aclassmet(cls):
         print('a class method for', cls.__name__)
     aclassmet = classmethod(aclassmet)

04_Object_Oriented_Python/per_instance_methods.py

@@ -1,7 +1,7 @@
 def fake_get_item(idx):
     return idx
 
-class MyClass(object):
+class MyClass:
     pass
 
 n = MyClass()

04_Object_Oriented_Python/properties.py

@@ -1,6 +1,6 @@
 import math
 
-class Rectangle(object):
+class Rectangle:
     def __init__(self, width, height):
         self.width = width
         self.height = height
@@ -13,7 +13,7 @@ def get_area(self):
 print(r.area)  # <- property, no ()'s
 
 # property decorator
-class Rectangle(object):
+class Rectangle:
     def __init__(self, width, height):
         self.width = width
         self.height = height
@@ -27,7 +27,7 @@ def area(self):
 print(r.area)
 
 
-class Rectangle(object):
+class Rectangle:
     def __init__(self, width, height):
         self.width = width
         self.height = height

04_Object_Oriented_Python/properties_and_inheritance.py

@@ -2,7 +2,7 @@
 # method is overridden in derived class (property is
 # defined using the base class method, and not resolved
 # to the derived class method)
-class B(object):
+class B:
     def f(self):
         return 23
     g = property(f)
@@ -15,7 +15,7 @@ def f(self):
 # call subclass method from property by binding property
 # to method that calls self.f(), to resolve to the derived
 # class's method
-class B(object):
+class B:
     def f(self):
         return 23
     def _f_getter(self):

04_Object_Oriented_Python/simple_bunch.py

@@ -1,4 +1,4 @@
-class SimpleBunch(object):
+class SimpleBunch:
     def __init__(self, **fields):
         self._dict__ = fields
 

04_Object_Oriented_Python/slots_rectangle.py

@@ -1,4 +1,4 @@
-class Rectangle(object):
+class Rectangle:
     def __init__(self, width, height):
         self.width = width
         self.height = height

05_Exceptions/tag_context_manager_class.py

@@ -14,7 +14,7 @@
 #         if _normal_exit:
 #             _manager.__exit__(None, None, None)
 
-class tag(object):
+class tag:
     def __init__(self, tagname):
         self.tagname = tagname
     def __enter__(self):