python 刷调查问卷

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
import time
from lxml import etree
import random
driver_path = r"C:\Users\top\Downloads\chromedriver_win32\chromedriver.exe"
driver = webdriver.Chrome(executable_path=driver_path)
#打开调查问卷网站
driver.get('https://www.wjx.cn/m/80563635.aspx')
time.sleep(2)
#1
js = 'document.getElementById("q1_%s").click()'%random.randint(1,2)
driver.execute_script(js)
time.sleep(2)
#2
a = random.randint(1,5)
b = random.sample([1,2,3,4,5],a)
for i in b:
    js = "document.getElementById('q2_%s').nextElementSibling.classList.add('jqchecked')" %i
    driver.execute_script(js)
#3
a = random.randint(1,2)
js = "document.getElementById('q3_%s').nextElementSibling.classList.add('jqchecked')"%a
driver.execute_script(js)
#4
a = random.randint(1,5)
b = random.sample([1,2,3,4,5],a)
for i in b:
    js = "document.getElementById('q4_%s').nextElementSibling.classList.add('jqchecked')" %i
    driver.execute_script(js)
#5
a = random.randint(1,2)
js = "document.getElementById('q5_%s').nextElementSibling.classList.add('jqchecked')" %a
driver.execute_script(js)
#6
a = random.randint(1,4)
b = random.sample([1,2,3,4],a)
for i in b:
    js = "document.getElementById('q6_%s').nextElementSibling.classList.add('jqchecked')" %i
    driver.execute_script(js)
#7
a = random.randint(1,4)
b = random.sample([1,2,3,4],a)
for i in b:
    js = "document.getElementById('q7_%s').nextElementSibling.classList.add('jqchecked')" %i
    driver.execute_script(js)
#8
a = random.randint(1,4)
b = random.sample([1,2,3,4],a)
for i in b:
    js = "document.getElementById('q8_%s').nextElementSibling.classList.add('jqchecked')" %i
    driver.execute_script(js)
#9
a = random.randint(1,5)
b = random.sample([1,2,3,4,5],a)
for i in b:
    js = "document.getElementById('q9_%s').nextElementSibling.classList.add('jqchecked')" %i
    driver.execute_script(js)
submit = driver.find_elements_by_css_selector('#ctlNext')[0]
submit.click()

本来还想着把线程加上，但貌似代码失败了，求大佬解答，论坛发不出去