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OOP & classes

Classes, instances, methods, dataclasses, and object-oriented design in Python.

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Understanding Multiple Inheritance Method Resolution Order in Python

This code demonstrates how Python's MRO determines which greet method is called in a diamond inheritance scenario, and prints the full MRO for class D.

multiple inheritance mro inheritance
Python 
class A:
    def greet(self):
        return "Hello from A"

class B(A):
    def greet(self):
        return "Hello from B"

class C(A):
    def greet(self):
        return "Hello from C"

class D(B, C):
    pass


if __name__ == "__main__":
    d = D()
    print(d.greet())
    print(D.__mro__)
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