python - 我如何选择带有 id 的 json 行

Question

我有这个

{"id":"141","bid":4.57000002,"ask":4.89999798},{"id":"345","bid":79933.93185001,"ask":92999.99999999}

我正在使用 python我如何仅通过 ID 获取出价或要价？

Answer 1

假设您的 JSON 数据中有一个字典列表:

def get_by_id(lst, id):
    for d in lst:
        if d.get('id') == str(id):
            return d
    return None

---

>>> import json

>>> data = '[{"id": "141", "bid": 4.57000002, "ask": 4.89999798}, {"id": "345", "bid": 79933.93185001, "ask": 92999.99999999}]'
>>> lst = json.loads(data)
>>> d = get_by_id(lst, 345)

>>> d['ask']
92999.99999999

>>> d['bid']
79933.93185001