def area(self): return 3.14 * self.radius ** 2
: When a function is accessed through an instance, it becomes a bound method , and the instance itself is automatically "injected" as the first argument, traditionally named self . Python 3- Deep Dive -Part 4 - OOP-
Here's an example of how we can access and modify the attributes of an object: def area(self): return 3
Introduced in Python 3.7, @dataclass is not just syntactic sugar—it generates __init__ , __repr__ , __eq__ , and __hash__ for you. it becomes a bound method
class Point: def __init__(self, x, y): self.x = x self.y = y def __repr__(self): return f"Point(x=self.x, y=self.y)"
print(D.__mro__) # (<class '__main__.D'>, <class '__main__.B'>, # <class '__main__.C'>, <class '__main__.A'>, <class 'object'>)