📘 Lesson · Lesson 87

Multiple Inheritance & MRO

Multiple Inheritance

💡 At a Glance

Unlike Java, Python allows a class to inherit from multiple parents. The MRO (Method Resolution Order) decides which parent's method runs first.

Example

Python

class A:
    def show(self): print("A")
class B(A):
    def show(self): print("B")
class C(A):
    def show(self): print("C")
class D(B, C):    # multiple inheritance
    pass

d = D()
d.show()          # follows MRO: D -> B -> C -> A
print(D.__mro__)

B (<class 'D'>, <class 'B'>, <class 'C'>, <class 'A'>, <class 'object'>)

Summary

Python allows multiple inheritance (D from B and C).
MRO decides method order: check with ClassName.__mro__.

Multiple Inheritance

💡 एक नज़र में

Java के उलट, Python एक class को कई parents से inherit करने देता है। MRO (Method Resolution Order) तय करता है कि कौन से parent का method पहले चले।

Example

Python

class A:
    def show(self): print("A")
class B(A):
    def show(self): print("B")
class C(A):
    def show(self): print("C")
class D(B, C):    # multiple inheritance
    pass

d = D()
d.show()          # MRO follow: D -> B -> C -> A
print(D.__mro__)

B (<class 'D'>, <class 'B'>, <class 'C'>, <class 'A'>, <class 'object'>)

सारांश

Python multiple inheritance देता है (D, B और C से)।
MRO method order तय करता है: ClassName.__mro__ से देखें।

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