from grab import Grab import json cookies with open cookie json as js

from grab import Grab
import json

cookies = {}
with open('cookie.json') as js:
    for cookie in json.loads(js.read()):
        cookies[cookie["name"]] = cookie["value"]

g = Grab()
g.setup(cookies = cookies)
g.go('https://market.yandex.ru')
print g.doc.select("//span[@class='user__name']").text()