json_key = json.load(open('gspread-8891908f3793.json'))
scope = ['https://spreadsheets.google.com/feeds']
credentials = SignedJwtAssertionCredentials(json_key['client_email'], json_key['private_key'], scope)
gc = gspread.authorize(credentials)
gc.login()
sht1 = gc.openall()
val = sht1[0].cell(1, 2).value