Coordinates as immutable records

Python data engineering interview problem. Difficulty: beginner. Pattern: Searching. About 10 minutes. Part of the Pro drill bank.

A warehouse stores pickup coordinates. Dispatch wants the stored point closest to a reference location. Coordinates should be treated as immutable records, not loose tuples you accidentally mutate.

Given stored points and a reference point, return the closest coordinate record.

Requirements

• Use an immutable record type for a point (named tuple or equivalent).
• Closest means smallest Euclidean (or squared) distance.

Constraints

• points: a collection of coordinate records.
• ref: the reference coordinate.
• There is at least a defined behavior for a single point.
• Ties should follow the tests.

Examples

Input: closest_coordinate([(0, 0), (2, 2)], (1, 1)) Output: (0, 0) This input follows the stated rules and produces this output.

Topics: lakebench, python, tuples.

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