Search a 2D Matrix II Python Solution

lcpy gen -n 240   # by problem number
lcpy gen -s search_a_2d_matrix_ii   # by problem name

Input: matrix = [[1,4,7,11,15],[2,5,8,12,19],[3,6,9,16,22],[10,13,14,17,24],[18,21,23,26,30]], target = 5
Output: true

Input: matrix = [[1,4,7,11,15],[2,5,8,12,19],[3,6,9,16,22],[10,13,14,17,24],[18,21,23,26,30]], target = 20
Output: false

class Solution:
    # Time: O(m + n)
    # Space: O(1)
    def search_matrix(self, matrix: list[list[int]], target: int) -> bool:
        row, col = 0, len(matrix[0]) - 1
        while row < len(matrix) and col >= 0:
            val = matrix[row][col]
            if val == target:
                return True
            if val > target:
                col -= 1
            else:
                row += 1
        return False