refactor: usage of built-in type hinting in Python solutions

challenges/sudoku/solutions/python/function/Grid.py

@@ -1,13 +1,11 @@
-from typing import List
-
 from Cell import Cell
 
 
 class Grid:
-    def __init__(self, grid: List[List[int]]) -> None:
-        data: List[List[Cell]] = []
+    def __init__(self, grid: list[list[int]]) -> None:
+        data: list[list[Cell]] = []
         for x in range(len(grid)):
-            column: List[Cell] = []
+            column: list[Cell] = []
             for y in range(len(grid[x])):
                 column.append(Cell(grid[x][y], y, x))
             data.append(column)

challenges/sudoku/solutions/python/function/solution.py

@@ -1,13 +1,12 @@
-from typing import List
 import sys
 
 from Sudoku import Sudoku
 from Grid import Grid
 
-grid_values: List[List[int]] = []
+grid_values: list[list[int]] = []
 for value in sys.stdin:
     row_values = value.rstrip('\n').split(' ')
-    current_row: List[int] = []
+    current_row: list[int] = []
     for row_value in row_values:
         current_row.append(int(row_value))
     grid_values.append(current_row)