import os import psutil from selenium.webdriver.chrome.options import Options from selenium import webdriver from selenium.webdriver.common.by import By

检查是否已经存在浏览器实例，如果存在则不再创建

for proc in psutil.process_iter(): try: if "chrome" in proc.name() and "--remote-debugging-port=9223" in proc.cmdline(): options = Options() options.add_experimental_option("debuggerAddress", "127.0.0.1:9223") break except: pass else: # 创建浏览器实例 os.system(r'start chrome --remote-debugging-port=9223 --user-data-dir="D:\评阅用"') options = Options() options.add_experimental_option("debuggerAddress", "127.0.0.1:9223")

在已有的浏览器实例中查找标签页

driver = webdriver.Chrome(options=options) tabs = driver.window_handles for tab in tabs: driver.switch_to.window(tab) if driver.title == "国家开放大学个人空间": break

在网页中查找课程

elements = driver.find_elements(By.CLASS_NAME,"learning_course") for element in elements: if element.text == "形势与政策": element.click() break

切换到点击课程后的标签页

tabs = driver.window_handles for tab in tabs: if tab != driver.current_window_handle: driver.switch_to.window(tab) break

等待网页加载完成

driver.implicitly_wait(10)

判断网页是否卡住，如果卡住就刷新一下网页

if driver.execute_script("return document.readyState") != "complete": driver.refresh()

找到全部展开并点击

try: element = driver.find_element(By.CLASS_NAME, "icon.font") if "font-toggle-all-collapsed" in element.get_attribute("class"): element.click()

    # 等待网页加载完成
    driver.implicitly_wait(10)

    # 判断网页是否卡住，如果卡住就刷新一下网页
    if driver.execute_script("return document.readyState") != "complete":
        driver.refresh()

# 点击学习
element = driver.find_element(By.CLASS_NAME,"item-status")
element.click()

# 等待网页加载完成
driver.implicitly_wait(10)

# 判断网页是否卡住，如果卡住就刷新一下网页
if driver.execute_script("return document.readyState") != "complete":
    driver.refresh()

except: pass