Python object() Built in Function

The object() function in Python returns a new featureless object that has no attributes. It is a base class for all other classes in Python. The object() function can also be used to test if an object is an instance of a class.

Here are some examples of using object() function in Python:

Using object() to create a featureless object

# This example creates an object using object() and tries to access its attributes
obj = object()
print(obj) # Output: <object object at 0x000001F8C9A6E0D0>
print(obj.name) # Output: AttributeError: 'object' object has no attribute 'name'

Using object() as a base class

# This example creates a class that inherits from object and adds some attributes
class Bike(object):
    def __init__(self ,name ,gear):
        self.name = name
        self.gear = gear

    def __str__(self):
        return f"{self.name} has {self.gear} gears"

# create objects of class Bike
bike1 = Bike("Mountain" ,21)
bike2 = Bike("Road" ,18)

print(bike1) # Output: Mountain has 21 gears
print(bike2) # Output: Road has 18 gears

Using object() to test for instances

# This example uses object() to check if an object is an instance of a class or not
class Animal(object):
    pass

class Dog(Animal):
    pass

class Cat(Animal):
    pass

a = Animal()
d = Dog()
c = Cat()

print(isinstance(a ,Animal)) # Output: True
print(isinstance(d ,Animal)) # Output: True
print(isinstance(c ,Animal)) # Output: True
print(isinstance(a ,Dog)) # Output: False
print(isinstance(d ,Cat)) # Output: False

If you have any questions about this code, you can drop a line in comment.

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