python - How to run my webscraper with a Flask REST API without waiting for it to finish before returning a response?

I have a RESTFUL API that I built with Flask which runs a
webscraper to download files.

I want to host it on a linux
EC2 instance and serve it using NGINX and Gunicorn.

I have
been testing my API with postman but because the scraper takes about 10 minutes to
finish postman hangs waiting for a response.

My flask app
looks something like this:

from flask import
            Flask
application =
            Flask(__name__)
@application.route('/scraper/run',
            methods=['POST'])
def init_scrape():
 data = request.json

            command = './web_scrape.py -us "{0}" -p "{1}" -url "{2}"'.format(data['username'],
            data['password'], data['url'])
 # This takes about 10 minutes

            output = subprocess.check_output(['bash','-c', command])
 return
            jsonify({'Scraping this site: ': request.json["url"]}), 201
if __name__ ==
            '__main__':
 application.run(host="0.0.0.0",
            port="8080")

Is there a way I can
run my scraper without having to wait for it to finish before returning some data to
postman?