test.py

import re
import json


if __name__ == '__main__':

    s = """
```json
[
    "共建一带一路",
    "中欧班列",
    "2021年",
    "2022年8月18日",
    "国际公共产品",
    "实打实、沉甸甸的成就",
    "组织编写",
    "正式发布"
]
```
    """
    print(s)
    a = re.findall(r'```json[\s\S]*```', s)[0]
    print(a)
    b = json.loads(a[7:-3])
    print(b)