from selenium import webdriver
from scrapy.selector import Selector
browser = webdriver.Chrome(executable_path="D:/Temp/chromedriver.exe")
# browser.get("https://www.zhihu.com/signup?next=%2F")
browser.get("https://www.zhihu.com/signin")
browser.find_element_by_css_selector(".SignFlow-accountInput.Input-wrapper input").send_keys("账号")
browser.find_element_by_css_selector(".SignFlow-password input").send_keys("密码")
browser.find_element_by_css_selector(".Button.SignFlow-submitButton").click()
print(browser.page_source)
要注意chromedriver.exe 的版本:https://sites.google.com/a/chromium.org/chromedriver/downloads