使用嵌套属性反序列化JSON对象

{
    "name": "John",
    "age": 30,
    "address": {
        "street": "123 Main St",
        "city": "Anytown",
        "zipcode": "12345"
    },
    "skills": ["Python", "JavaScript", "SQL"]
}

import json

json_str = '''
{
    "name": "John",
    "age": 30,
    "address": {
        "street": "123 Main St",
        "city": "Anytown",
        "zipcode": "12345"
    },
    "skills": ["Python", "JavaScript", "SQL"]
}
'''

# 反序列化
data = json.loads(json_str)

print(data['name'])  # 输出: John
print(data['address']['city'])  # 输出: Anytown
print(data['skills'][0])  # 输出: Python

if 'name' in data:
    print(data['name'])
else:
    print("Key 'name' not found")

try:
    data = json.loads(json_str)
except json.JSONDecodeError as e:
    print(f"JSON decode error: {e}")

import ijson

with open('large_file.json', 'r') as f:
    for item in ijson.items(f, 'item'):
        print(item)