function to run a scrapy crawler on python script

run scrapy spider on python script.md

Run a Scrapy spider on script

import scrapy

#--run a crawler in a script stuff
from pydispatch             import dispatcher
from scrapy                 import signals
from scrapy.crawler         import CrawlerProcess
from pydispatch             import dispatcher
from scrapy.utils.project   import get_project_settings
#--run a crawler in a script stuff

#--the spiders
from path.to.proyect.spiders.mySpider import mySpider
#--the spiders

def run_a_spider_on_script(spider, signal=signals.item_passed, slot=None): 
    '''
    @brief  A function given a spider run it. If a signal an a slot is given connect it

    @param  spider
            The spider itself
    
    @param  signal
            scrapy signal ( defualt item passed  )
    
    @param  slot
            Function to launch after the signal is triggered
    '''
    # The spider
    spiderObj = spider()

    # The process to execute the spider
    process = CrawlerProcess( get_project_settings() )

    # if the slot is not None...
    if (slot is not None):
        # Connect the signal with the slot
        # When the signal triggers execute the slot
        dispatcher.connect( slot, signal )

    # Set in the process the spider
    process.crawl( spider )
    process.start()

Hello,
Your script is running properly but not downloading any content

Thank you for this code.
But, please, how to make it crawl the site and download content?

Thank you for this code.
But, please, how to make it crawl the site and download content?

I could make it download the content.
And also, I noticed that we do not need to instantiate the spider in the function. Passing the class in parameter was doing the work.
Thank you again.