Scrapy signal only works in main thread
WebFeb 1, 2024 · Python flask - builtins.ValueError: signal only works in main thread pssantosh February 2024 in Python client Hi, I was trying to implement a web app using the ticker information. However I am using it as a just a function it all works fine but when I try to run the flask application, it throws the below error. WebJun 9, 2024 · As the Python documentation states: Python signal handlers are always executed in the main Python thread, even if the signal was received in another thread. This means that signals can’t be used as a means of inter-thread communication. You can use the synchronization primitives from the threading module instead.
Scrapy signal only works in main thread
Did you know?
WebSep 23, 2024 · Basically, the way it works is that you start a new CrawlerProcess instance, then you pass a spider to class by calling crawl()(which you have done correctly with the … WebJul 14, 2024 · Scrapy uses signals and it only works on main thread where as when running this command in my streamlit code st.text (threading.current_thread ().name) it is known …
WebNov 2, 2024 · The signal can be any object, although Scrapy comes with some predefined signals that are documented in the :ref:`topics-signals` section.:param receiver: the … Websignal.signal(signal.SIGINT, self.sigInt) exceptions.ValueError: signal only works in main thread Does anyone have any idea how i can achieve this?? Please see the code i'm using …
WebMar 2, 2024 · This is my flow from prefect import task, flow @flow def bank_website_news(): settings = get_project_settings() process = CrawlerProcess(settings) process.crawl(BankNews) process.start() I got this erorr handler = _signal.signal(_enum_to_int(signalnum), _enum_to_int(handler)) … WebJun 4, 2024 · The text was updated successfully, but these errors were encountered:
WebOct 22, 2024 · ValueError: signal only works in main thread of the main interpreter. File "C:\Python39\lib\site-packages\streamlit\script_runner.py", line 354, in _run_script
http://devdoc.net/python/scrapy-doc-1.4/news.html tax thomson reuters cs renewalsScrapy uses signals and it only works on the main thread whereas when running this command in my streamlit code st.text (threading.current_thread ().name) it is known that streamlit runs on ScriptRunner.scriptThread therefore signals are not working on this thread. tax the wealthyWebOct 1, 2024 · You are trying to run asyncio.get_event_loop() in some thread other than the main thread – however, asyncio only generates an event loop for the main thread. Use this function instead of asyncio.get_event_loop(): ... (signalnum), _enum_to_int(handler)) ValueError: signal only works in main thread ... tax thomashwangcpa.comWebFlask APP - ValueError: signal only works in main thread score:44 Accepted answer The problem you are facing has to do with a bug in the Flask-SocketIO package which replaces the flask run command. Due to this Flask-SocketIO is always used even if you don’t import it. There are several solutions: Uninstall Flask-SocketIO tax threshold 2022 nzWebValueError: signal only works in main thread this is my code: class DarasListView (ListView): template_name = 'movie/index.html' queryset = Movie.objects.all () from scrapy.crawler import CrawlerProcess from scrapy.utils.project import get_project_settings process = CrawlerProcess (get_project_settings ()) taxthorWebMar 1, 2024 · Python signal handlers are always executed in the main Python thread, even if the signal was received in another thread. As a result, when CTRL+Cis pressed, only the main thread raises a KeyboardInterruptexception. The sniffing thread will continue its infinite sniffing loop, blocking at the same time the call of sniffer.join(). tax thomsonWebScrapy 1.4.0 (2024-05-18)¶ Scrapy 1.4 does not bring that many breathtaking new features but quite a few handy improvements nonetheless. Scrapy now supports anonymous FTP session tax threshold 2024