减少深度嵌套属性的匹配缩进

user = {
    'name': 'John',
    'age': 30,
    'address': {
        'street': '123 Main St',
        'city': 'New York',
        'country': 'USA'
    }
}

# 使用辅助变量
address = user['address']
street = address['street']
city = address['city']
country = address['country']

print(street, city, country)

user = {
    'name': 'John',
    'age': 30,
    'address': '''
        123 Main St
        New York
        USA
    '''
}

# 使用多行字符串
address = user['address'].strip().split('\n')
street = address[0]
city = address[1]
country = address[2]

print(street, city, country)

def get_address(user):
    return user['address']['street'], user['address']['city'], user['address']['country']

user = {
    'name': 'John',
    'age': 30,
    'address': {
        'street': '123 Main St',
        'city': 'New York',
        'country': 'USA'
    }
}

# 使用函数封装
street, city, country = get_address(user)

print(street, city, country)