from typing import Union


def process_item(item: Union[int, str]):

def process_item(item: int | str):

def process_items(items_t: tuple[int, int, str], items_s: set[bytes]):

from typing import Dict


def process_items(prices: Dict[str, float]):
    for item_name, item_price in prices.items():
        print(item_name)

def process_items(items: list[str]):
    for item in items:

@app.middleware("http")
async def add_process_time_header(request: Request, call_next):
    start_time = time.perf_counter()
    response = await call_next(request)
    process_time = time.perf_counter() - start_time
    response.headers["X-Process-Time"] = str(process_time)

def process_items(prices: dict[str, float]):
    for item_name, item_price in prices.items():
        print(item_name)

        async def add_process_time_header(request: Request, call_next):
            start_time = time.time()
            response = await call_next(request)
            process_time = time.time() - start_time
            response.headers["X-Process-Time"] = str(process_time)
            return response
        ```
        """

        def decorator(func: DecoratedCallable) -> DecoratedCallable: