如何在ndarray上创建一个带环绕的滑动窗口？

import numpy as np

def create_wrapped_sliding_window(arr, window_size):
    rows, cols = arr.shape
    window_rows, window_cols = window_size

    for i in range(rows):
        for j in range(cols):
            # 计算滑动窗口的边界
            start_row = i
            start_col = j
            end_row = i + window_rows
            end_col = j + window_cols

            # 处理滑动窗口超出边界的情况
            if end_row > rows:
                end_row = rows
                start_row = end_row - window_rows

            if end_col > cols:
                end_col = cols
                start_col = end_col - window_cols

            # 获取滑动窗口内的子数组
            window = arr[start_row:end_row, start_col:end_col]

            # 在这里进行滑动窗口的操作，例如计算窗口内的均值、方差等等
            # ...

            # 示例：打印窗口及其坐标
            print("Window:", window)
            print("Start Row:", start_row)
            print("Start Col:", start_col)
            print("End Row:", end_row)
            print("End Col:", end_col)
            print()

# 创建一个示例ndarray
arr = np.array([[1, 2, 3, 4],
                [5, 6, 7, 8],
                [9, 10, 11, 12]])

# 定义滑动窗口的大小
window_size = (2, 2)

# 创建带环绕的滑动窗口
create_wrapped_sliding_window(arr, window_size)