如何从python返回的json文件中获取某个key？

import json

# 假设json_data是一个包含JSON数据的字符串
json_data = '{"name": "Alice", "age": 30, "city": "New York"}'

# 使用json.loads()函数将JSON字符串转换为Python字典
data = json.loads(json_data)

# 通过key获取对应的值
name = data['name']
age = data['age']
city = data['city']

print(f"Name: {name}, Age: {age}, City: {city}")

import json

# 打开并读取JSON文件
with open('data.json', 'r') as file:
    data = json.load(file)

# 通过key获取对应的值
name = data['name']
print(f"Name: {name}")

{
    "name": "Alice",
    "age": 30,
    "city": "New York"
}

if 'name' in data:
    name = data['name']
else:
    name = "Default Name"

name = data.get('name', "Default Name")