Function determinant

matrix/matrix_operation.py:125–138

>>> determinant([[1, 2], [3, 4]]) -2 >>> determinant([[1.5, 2.5], [3, 4]]) -1.5

(matrix: list[list[int]])

def determinant(matrix: list[list[int]]) -> Any:
    """
    >>> determinant([[1, 2], [3, 4]])
    -2
    >>> determinant([[1.5, 2.5], [3, 4]])
    -1.5
    """
    if len(matrix) == 1:
        return matrix[0][0]

    return sum(
        x * determinant(minor(matrix, 0, i)) * (-1) ** i
        for i, x in enumerate(matrix[0])
    )


def inverse(matrix: list[list[int]]) -> list[list[float]] | None: