class ExitRealtySpider(BaseSpider):
    name = 'exit_realty'
allowed_domains = ['exitrealty.com']
start_urls = [URL]

def parse(self, response):
    self.data = {}
for form_input in response.css('form#aspnetForm input'):
    name = form_input.xpath('@name').extract()[0]
try:
    value = form_input.xpath('@value').extract()[0]
except IndexError:
    pass
Сканирование страниц с данными PostBack javascript Python Scrapy