solution.py

from typing import Any

SUBMIT = True


def variable_swap(a: Any, b: Any) -> tuple[Any, Any]:
    """Swaps the values of a and b.

    Example usage:
    >>> variable_swap(5, 10)
    (10, 5)
    >>> variable_swap("hello", "world")
    ('world', 'hello')
    """
    a,b=b,a
    return a, b


def test() -> None:
    """Simple self-test for Variable Swap."""
    cases = [(5, 10, (10, 5)), ("apple", "banana", ("banana", "apple"))]
    for a, b, expected in cases:
        try:
            res = variable_swap(a, b)
            assert res == expected, (
                f"Failed for a={a}, b={b}: expected {expected}, got {res}"
            )
        except AssertionError as e:
            print(f"❌ {e}")
            return
    print("✅ All tests passed!")


if __name__ == "__main__":
    test()