python如何检查嵌套列表是否包含所有None值

def check_nested_list(lst):
    for item in lst:
        if isinstance(item, list):
            if not check_nested_list(item):
                return False
        elif item is not None:
            return False
    return True

# 示例用法
nested_list = [[None, None], [None, None]]
if check_nested_list(nested_list):
    print("嵌套列表包含所有None值")
else:
    print("嵌套列表不包含所有None值")

nested_list = [[None, None], [None, None]]
if all(item is None for sublist in nested_list for item in sublist):
    print("嵌套列表包含所有None值")
else:
    print("嵌套列表不包含所有None值")

import numpy as np

nested_list = [[None, None], [None, None]]
if np.all(np.array(nested_list) == None):
    print("嵌套列表包含所有None值")
else:
    print("嵌套列表不包含所有None值")