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