Immutable Class Implementation | Dataford Interview Questions

How to make a class immutable?

Implement create_immutable_point(x, y), returning an object with read-only x and y attributes. The object must reject attribute reassignment, deletion, and addition after construction, while still supporting normal reads. The function should return a dictionary snapshot containing the two values so the result can be graded.

Constraints

x and y are existing values that do not need validation.
The returned object must expose readable x and y attributes.
Reassigning or deleting any attribute must raise AttributeError.
Adding an undeclared attribute must raise AttributeError.
The constructor must remain the only supported way to set the point's values.

Function Signature

def create_immutable_point(x, y):

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Problem

How to make a class immutable?

Constraints

x and y are existing values that do not need validation.
The returned object must expose readable x and y attributes.
Reassigning or deleting any attribute must raise AttributeError.
Adding an undeclared attribute must raise AttributeError.
The constructor must remain the only supported way to set the point's values.

Function Signature

def create_immutable_point(x, y):

Your question is Immutable Class Implementation. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.