Use warnings.deprecated

pyproject.toml

@@ -9,6 +9,7 @@ description = "Put Scrapy spiders behind an HTTP API"
 dependencies = [
     "scrapy>=2.7",
     "packaging>=20.0",
+    'typing-extensions>=4.5.0; python_version < "3.13"',
 ]
 classifiers = [
     "Development Status :: 5 - Production/Stable",

scrapyrt/core.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import datetime as dt
+import sys
 from collections import OrderedDict
 from copy import deepcopy
 from pathlib import Path
@@ -17,6 +18,15 @@
 from .conf.spider_settings import get_project_settings, get_scrapyrt_settings
 from .log import setup_spider_logging
 
+if sys.version_info >= (3, 13):
+    from warnings import deprecated
+else:
+    from typing_extensions import deprecated
+
+_START_REQUESTS_DEPRECATED = (
+    "CrawlManager.start_requests is deprecated, use CrawlManager.spider_start instead."
+)
+
 
 class ScrapyrtCrawlerRunner(CrawlerRunner):
     def __init__(self, settings, scrapyrt_manager):
@@ -107,23 +117,13 @@ def _init_spider_start(self, start_requests, spider_start):
             self.spider_start = spider_start
 
     @property
+    @deprecated(_START_REQUESTS_DEPRECATED)
     def start_requests(self):
-        warn(
-            "CrawlManager.start_requests is deprecated, use "
-            "CrawlManager.spider_start instead.",
-            DeprecationWarning,
-            stacklevel=2,
-        )
         return self.spider_start
 
     @start_requests.setter
+    @deprecated(_START_REQUESTS_DEPRECATED)
     def start_requests(self, value: bool):
-        warn(
-            "CrawlManager.start_requests is deprecated, use "
-            "CrawlManager.spider_start instead.",
-            DeprecationWarning,
-            stacklevel=2,
-        )
         self.spider_start = value
 
     def crawl(self, *args, **kwargs):

tox.ini

@@ -71,6 +71,7 @@ deps =
     # DeprecationWarning: twisted.web.http.HTTPClient was deprecated in
     # Twisted 24.7.0: Use twisted.web.client.Agent instead.
     Twisted<24.7.0
+    typing-extensions==4.5.0
 
 
 [testenv:coverage]