# Before
def process_order(order):
    # 验证订单
    if not order.items:
        raise ValueError("空订单")
    if order.total < 0:
        raise ValueError("金额错误")
    # 处理逻辑...

# After
def process_order(order):
    validate_order(order)
    # 处理逻辑...

def validate_order(order):
    if not order.items:
        raise ValueError("空订单")
    if order.total < 0:
        raise ValueError("金额错误")

# Before
def create_report(start_date, end_date, format, include_header):
    ...

# After
@dataclass
class ReportConfig:
    start_date: date
    end_date: date
    format: str = "pdf"
    include_header: bool = True

def create_report(config: ReportConfig):
    ...