login.py

# -*- coding: utf-8 -*-
import scrapy
from scrapy import FormRequest


class LoginSpider(scrapy.Spider):
    name = 'login'
    start_urls = ['http://quotes.toscrape.com/login']

    def parse(self, response):
        token = response.xpath('//input[@name="csrf_token"]/@value').get()
        data = {
            'csrf_token': token,
            'username': 'user',
            'password': 'pwd'
        }
        header = {
            'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9'
        }

        req = FormRequest.from_response(response,
                                        formdata=data,
                                        headers=header,
                                        callback=self.after_login)
        return req

    def after_login(self, response):
        # response.css('a:contains("Logout") ::text').get()
        status = response.xpath('//a[text()="Logout"]/text()').get()
        if status == "Logout":
            print('Logged In')
        else:
            print('NOT Logged In')