Question

如何从json文件中检索所有名称和ID。这是json文件的简短版本。我想检索所有名称和ID，以便我可以将它们与变量匹配。然后，我可以对它进行一些工作。因此，请帮助我检索所有ID和名称。我在Google中搜索，但找不到。每个示例都是单个json。

[
 {
    "id": 707860,
    "name": "Hurzuf",
    "country": "UA",
    "coord": {
      "lon": 34.283333,
      "lat": 44.549999
    }
  },
  {
    "id": 519188,
    "name": "Novinki",
    "country": "RU",
    "coord": {
      "lon": 37.666668,
      "lat": 55.683334
    }
  },
  {
    "id": 1283378,
    "name": "Gorkhā",
    "country": "NP",
    "coord": {
      "lon": 84.633331,
      "lat": 28
    }
  }
]

这是我的代码：

import json

with open('city.list.json') as f:
    data = json.load(f)
for p_id in data:
    hay = p_id.get('name')

假设我有一个单词德里，现在我将它与上面词典中的名称进行比较。当它命中时，我想检索它的ID。

if hay == delhi:
   ga = # retrive delhi's id

Answer 1

您需要检查姓名并应用条件：

    for p_id in data:
        u_id = p_id.get('id')
        u_name = p_id.get('name')
        if(u_id == 1283378 and u_name == "Gorkha"):
            # dosomthing

Answer 2

不确定确切的输出。但这会在新变量中提取id和name。

ids=[]
for p_id in data:
    ids.append((p_id['id'], p_id['name']))
print(ids)

输出：

[(707860, 'Hurzuf'), (519188, 'Novinki'), (1283378, 'Gorkhā')]

Answer 3

我建议采用另一种方法，将JSON数据处理为dict，然后从中获取所需的信息。例如：

import json

with open('city.list.json') as f:
    data = json.load(f)

name_by_id = dict([(str(p['id']), p['name']) for p in data])
id_by_name = dict([(p['name'], p['id']) for p in data])

结果：

>>> print(id_by_name['Hurzuf'])
707860
>>> print(name_by_id['519188'])
Novinki

Answer 4

import json

with open('citylist.json') as f:
    data = json.load(f)
    
list1 = list ((p_id.get('id') for p_id in data if p_id.get('name') == "Novinki")) 
# you can put this in print statement,
# but since goal is to save and not just print, 
# you can store in a variable
 
print(*list1, sep="\n")

给予

519188

[Program finished]

如何从python3中的json文件中检索所有“名称”和“ id”

4 个答案: