如何查找列表中是否包含空值？

def contains_null(lst):
    return any(item is None or item == "" for item in lst)

# 示例
my_list = [1, 2, None, 4, ""]
print(contains_null(my_list))  # 输出: True

function containsNull(arr) {
    return arr.some(item => item === null || item === undefined || item === "");
}

// 示例
const myList = [1, 2, null, 4, ""];
console.log(containsNull(myList));  // 输出: true

import java.util.List;

public class Main {
    public static boolean containsNull(List<Object> list) {
        for (Object item : list) {
            if (item == null || item.toString().isEmpty()) {
                return true;
            }
        }
        return false;
    }

    public static void main(String[] args) {
        List<Object> myList = List.of(1, 2, null, 4, "");
        System.out.println(containsNull(myList));  // 输出: true
    }
}

function containsNull(arr) {
    return arr.some(item => item === null || item === undefined || (typeof item === "string" && item.trim() === ""));
}