Python 如何使用Selenium打印页面源代码

我有下面的代码，它搜索Twitter并在无限滚动中滚动。“打印数据”一行对我来说不起作用。有什么想法吗

# Import Selenium stuff
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import Select
from selenium.webdriver.support.ui import WebDriverWait
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import NoSuchElementException
from selenium.common.exceptions import NoAlertPresentException

# Import other needed packages
import sys
import unittest, time, re

# Call up Firefox, do the Twitter search, click the "All" link and start paging
class Sel(unittest.TestCase):
def setUp(self):
    self.driver = webdriver.Firefox()
    self.driver.implicitly_wait(30)
    self.base_url = "https://twitter.com"
    self.verificationErrors = []
    self.accept_next_alert = True
def test_sel(self):
    driver = self.driver
    delay = 3
    driver.get(self.base_url + "/search?q=storstrut&src=typd")
    driver.find_element_by_link_text("All").click()
    for i in range(1,100):
        self.driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")
        time.sleep(4)
    html_source = driver.page_source
    data = html_source.encode('utf-8')
    print data


if __name__ == "__main__":
    unittest.main() 

---

您有很多未使用的代码和奇怪的导入，但您走的是正确的道路

这是一个简化的版本，有注释解释

import time
from selenium import webdriver


# launch Firefox
driver = webdriver.Firefox()

# load Twitter page
driver.get("https://twitter.com/search?q=storstrut&src=typd")

# the following javascript scrolls down the entire page body.  Since Twitter
# uses "inifinite scrolling", more content will be added to the bottom of the
# DOM as you scroll... since it is in the loop, it will scroll down up to 100 
# times.
for _ in range(100):
    driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")

# print all of the page source that was loaded
print driver.page_source.encode("utf-8")

# quit and close browser
driver.quit()

---

你应该等400秒。。在每次迭代中，你都在循环和睡眠。对不起，你能告诉我这是怎么做到的吗（在代码中）？非常感谢你，但不知怎么的，第一个混乱的代码实际上会向下滚动，而他的更干净的代码不会…@textnet我可以确认这个答案是有效的，你使用的是最新版本的Selenium吗？