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13. Slots for Memory Optimization

__slots__ restricts attributes and reduces memory usage by preventing the creation of __dict__.

Example​

class Point:
    __slots__ = ("x", "y")
    def __init__(self, x, y):
        self.x = x
        self.y = y

p = Point(1, 2)
print(p.x, p.y)

Wrap-Up​

Use __slots__ for classes with many instances to save memory, but it removes dynamic attributes.