Sep 6, 2025 · Sep 7, 2025 · Aug 14, 2025 · Sep 7, 2025 · Sep 7, 2025 · Nov 15, 2025
diff --git a/scrapy/core/spidermw.py b/scrapy/core/spidermw.py
        self, spider: Spider | None = None
    ) -> AsyncIterator[Any] | None:
        if spider:
            self._warn_spider_arg("process_start")
            if self.crawler:
                msg = (
                    "Passing a spider argument to SpiderMiddlewareManager.process_start() is deprecated"
                    " and the passed value is ignored."
                )
            else:
                msg = (
                    "Passing a spider argument to SpiderMiddlewareManager.process_start() is deprecated,"
                    " SpiderMiddlewareManager should be instantiated with a Crawler instance instead."
                )
            warn(msg, category=ScrapyDeprecationWarning, stacklevel=2)
            self._set_compat_spider(spider)
        self._check_deprecated_start_requests_use()
        if self._use_start_requests:
diff --git a/scrapy/middleware.py b/scrapy/middleware.py
                f" {self._compat_spider} and {spider}"
            )

    def _warn_spider_arg(self, method_name: str) -> None:
        if self.crawler:
            msg = (
                f"Passing a spider argument to {type(self).__name__}.{method_name}() is deprecated"
                " and the passed value is ignored."
            )
        else:
            msg = (
                f"Passing a spider argument to {type(self).__name__}.{method_name}() is deprecated,"
                f" {type(self).__name__} should be instantiated with a Crawler instance instead."
            )
        warnings.warn(msg, category=ScrapyDeprecationWarning, stacklevel=3)

    @classmethod
    @abstractmethod
    def _get_mwlist_from_settings(cls, settings: Settings) -> list[Any]:
Original file line number	Diff line number	Diff line change
Expand Up		@@ -438,7 +438,17 @@ async def process_start(
		self, spider: Spider \| None = None
		) -> AsyncIterator[Any] \| None:
		if spider:
		self._warn_spider_arg("process_start")
		if self.crawler:
		msg = (
		"Passing a spider argument to SpiderMiddlewareManager.process_start() is deprecated"
		" and the passed value is ignored."
		)
		else:
		msg = (
		"Passing a spider argument to SpiderMiddlewareManager.process_start() is deprecated,"
		" SpiderMiddlewareManager should be instantiated with a Crawler instance instead."
		)
		warn(msg, category=ScrapyDeprecationWarning, stacklevel=2)
		self._set_compat_spider(spider)
		self._check_deprecated_start_requests_use()
		if self._use_start_requests:
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -84,19 +84,6 @@ def _set_compat_spider(self, spider: Spider \| None) -> None:
		f" {self._compat_spider} and {spider}"
		)

		def _warn_spider_arg(self, method_name: str) -> None:
		if self.crawler:
		msg = (
		f"Passing a spider argument to {type(self).__name__}.{method_name}() is deprecated"
		" and the passed value is ignored."
		)
		else:
		msg = (
		f"Passing a spider argument to {type(self).__name__}.{method_name}() is deprecated,"
		f" {type(self).__name__} should be instantiated with a Crawler instance instead."
		)
		warnings.warn(msg, category=ScrapyDeprecationWarning, stacklevel=3)

		@classmethod
		@abstractmethod
		def _get_mwlist_from_settings(cls, settings: Settings) -> list[Any]:
Expand Down