随机执行字典中的键

import random

# 创建一个字典
my_dict = {
    'a': 1,
    'b': 2,
    'c': 3,
    'd': 4
}

# 随机选择一个键
random_key = random.choice(list(my_dict.keys()))

# 获取该键对应的值
value = my_dict[random_key]

print(f"随机选择的键是: {random_key}, 对应的值是: {value}")

const myDict = {
    a: 1,
    b: 2,
    c: 3,
    d: 4
};

// 随机选择一个键
const randomKey = Object.keys(myDict)[Math.floor(Math.random() * Object.keys(myDict).length)];

// 获取该键对应的值
const value = myDict[randomKey];

console.log(`随机选择的键是: ${randomKey}, 对应的值是: ${value}`);

import java.util.HashMap;
import java.util.Map;
import java.util.Random;

public class RandomDictionaryKey {
    public static void main(String[] args) {
        Map<String, Integer> myDict = new HashMap<>();
        myDict.put("a", 1);
        myDict.put("b", 2);
        myDict.put("c", 3);
        myDict.put("d", 4);

        // 获取所有键的列表
        String[] keys = myDict.keySet().toArray(new String[0]);

        // 随机选择一个键
        Random random = new Random();
        String randomKey = keys[random.nextInt(keys.length)];

        // 获取该键对应的值
        int value = myDict.get(randomKey);

        System.out.println("随机选择的键是: " + randomKey + ", 对应的值是: " + value);
    }
}

if not my_dict:
    raise ValueError("字典为空")

if (Object.keys(myDict).length === 0) {
    throw new Error("字典为空");
}

if (myDict.isEmpty()) {
    throw new IllegalStateException("字典为空");
}