Memory Optimization with slots

Medium Modern Python OOP Features

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Problem Statement

Define a standard Python class `Point3D` that accepts `x`, `y`, and `z` in `__init__`. Use `__slots__ = (‘x’, ‘y’, ‘z’)` to restrict dynamic attributes. Catch an `AttributeError` if you try to assign `p.w = 4` and print ‘Slot restricted’.

Input Format

Three space-separated integers.

Output Format

Print 'Slot restricted'.

Constraints

None

Sample Input

1 2 3

Sample Output

Slot restricted

Explanation

Defining `__slots__` prevents the creation of `__dict__` for each instance, massively saving memory for objects instantiated frequently.

Starter Code

class Point3D:
    # Define __slots__ and __init__
    pass

if __name__ == '__main__':
    x, y, z = map(int, input().split())
    # Instantiate, attempt to assign .w, catch error
    pass

Limits

Time Limit: 1s
Memory Limit: 256MB

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