如何获取嵌套的JSON键值，然后将其赋值给变量？

{
  "person": {
    "name": "John",
    "age": 30
  }
}

import json

# JSON数据
json_data = '''
{
  "person": {
    "name": "John",
    "age": 30
  }
}
'''

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

# 获取嵌套键值并赋给变量
name = data['person']['name']
age = data['person']['age']

# 打印变量值
print("Name:", name)
print("Age:", age)

Name: John
Age: 30