如何以JSON数组的形式访问KeyValuePair集合

import json

# KeyValuePair集合
key_value_pairs = {
    "key1": "value1",
    "key2": "value2",
    "key3": "value3"
}

# 创建空的JSON数组
json_array = []

# 遍历KeyValuePair集合
for key, value in key_value_pairs.items():
    # 创建JSON对象
    json_object = {
        "key": key,
        "value": value
    }
    # 将JSON对象添加到JSON数组中
    json_array.append(json_object)

# 将JSON数组转换为JSON字符串
json_string = json.dumps(json_array)

print(json_string)

[{"key": "key1", "value": "value1"}, {"key": "key2", "value": "value2"}, {"key": "key3", "value": "value3"}]