提取嵌套的json映射

{
  "name": "John",
  "age": 30,
  "address": {
    "street": "123 Main St",
    "city": "New York",
    "country": "USA"
  },
  "contacts": [
    {
      "type": "email",
      "value": "john@example.com"
    },
    {
      "type": "phone",
      "value": "123-456-7890"
    }
  ]
}

import json

# 假设json_data是从API响应中获取的JSON数据
json_data = '''
{
  "name": "John",
  "age": 30,
  "address": {
    "street": "123 Main St",
    "city": "New York",
    "country": "USA"
  },
  "contacts": [
    {
      "type": "email",
      "value": "john@example.com"
    },
    {
      "type": "phone",
      "value": "123-456-7890"
    }
  ]
}
'''

# 解析JSON数据
data = json.loads(json_data)

# 提取地址的城市信息
city = data["address"]["city"]
print("城市信息：", city)

# 提取联系方式中的邮箱地址
email = [contact["value"] for contact in data["contacts"] if contact["type"] == "email"][0]
print("邮箱地址：", email)