What is advanced inheritance in Python?
Advanced inheritance in Python refers to the use of multiple inheritance, mixins, and the super() function to create complex class hierarchies.
Can you explain multiple inheritance with an example?
Sure! In Python, multiple inheritance allows a class to inherit from more than one base class. For example:
class A:
def method_a(self):
return 'Method A'
class B:
def method_b(self):
return 'Method B'
class C(A, B):
pass
c = C()
print(c.method_a()) # Output: Method A
print(c.method_b()) # Output: Method B
What are mixins and how do they work?
Mixins are a sort of class that provides methods to other classes through inheritance, but they are not meant to stand on their own. They allow for code reuse. For example:
class JsonMixin:
def to_json(self):
return 'JSON representation'
class User(JsonMixin):
pass
user = User()
print(user.to_json()) # Output: JSON representation
How does the super() function work in inheritance?
The super()
function allows you to call methods from a parent class. It’s especially useful in multiple inheritance scenarios to ensure the correct method resolution order (MRO) is followed.
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